In Re Kensington International Ltd.

*214 OPINION OF THE COURT GARTH, Circuit Judge. We have before us two Emergency Petitions for a Writ of Mandamus. Both Petitions allege that a district court judge who has presided over five asbestos-related bankruptcies for the past two years has, through his association with certain advis-ors, created an appearance of partiality such that he must be disqualified from any further participation in those proceedings. The parties seeking the district court judge’s disqualification originally moved for recusal in the Bankruptcy Court, but filed Petitions for Mandamus in our Court after the district court judge withdrew the recusal motions from the Bankruptcy Court and stayed discovery on those motions. The District Court has yet to rule on the recusal motions. As originally filed, both Petitions asked us to issue an order directing the district court judge either to: (a) recuse himself pursuant to 28 U.S.C. § 455; or (b) expedite consideration of (including discovery on) the recusal motions pending before him. After carefully considering all of the written submissions from the parties and amicus curiae and following a sharply-contested hearing, we have decided to direct the district court judge to rule on the withdrawn recusal motions. In doing so, we will vacate the district court judge’s order staying discovery on the recusal motions and direct that expedited discovery proceed without interruption. Because of certain temporal exigencies explained later in this opinion, we will direct that all discovery and the district court judge’s ruling on the recusal motions be completed no later than January 31, 2004. We will retain jurisdiction over any further proceedings subsequent to the district court judge’s ruling. See In re Sch. Asbestos Litig., 977 F.2d 764, 774-78 (3d Cir.1992). We emphasize at the outset of this opinion that we are not ruling on the merits of the disqualification relief sought by the Petitioners. Our decision to remand the recusal motions to the district court judge is prompted by our overarching concern that we do not have an adequately developed evidentiary record before us. I. A. The Parties This case arises from five Chapter 11 asbestos-related bankruptcies involving the following corporate entities: Owens Corning, W.R. Grace & Co., USG Corporation, Armstrong World Industries, Inc., and Federal-Mogul Global, Inc. (collectively, the “Five Asbestos Cases”). The first Petition for Mandamus was brought by Kensington International Limited and Springfield Associates, LLC, two creditors of Owens Corning (collectively, “Kensington ”). The second Petition for Mandamus was filed by D.K. Acquisition Partners, L.P., Fernwood Associates, L.P., and Deutsche Bank Trust Company Americas, three creditors of W.R. Grace & Co. (collectively, “D.K. Acquisition Partners ”). In response to the Petitions for Mandamus, we received Answers from Owens Corning, the Unofficial Committee of Select Asbestos Claimants, the Baron & Budd Claimants, W.R. Grace & Co., Waters & Kraus, LLP, a Dallas firm which filed a response on November 10 on behalf of asbestos claimants, James J. McMona-gle (Legal Representative for Future Claimants of Owens Corning), the Official Committee of Asbestos Creditors of Owens Corning, the Official Committee of W.R. Grace Asbestos Claimants, and Credit Suisse First Boston (“CSFB”). We also received Replies to these Answers. *215 In addition, we received written submissions from five amicus curiae. In no particular order, the amici are: Armstrong World Industries, Inc., the Official Committee of Unsecured Creditors of Armstrong World Industries, Inc. et al., the Washington Legal Foundation, USG Corporation, and the Official Committee of Unsecured Creditors of USG Corporation et al. B. The Court-Appointed Consultants On November 27, 2001, then-Chief Judge Becker of our Court 1 ordered that the Five Asbestos Cases, which were then pending in the District of Delaware, be transferred from the Bankruptcy Court to Senior District Court Judge Alfred M. Wo-lin of the District Court of New Jersey. Chief Judge Becker explained in his order that “these bankruptcy cases, which carry with them tens of thousands of asbestos claims, need to be consolidated before a single judge so that a coordinated plan for management can be developed and implemented.” Shortly after receiving the Five Asbestos Cases, Judge Wolin re-referred them to the Bankruptcy Court, but retained jurisdiction over the asbestos-related claims and issues. On December 28, 2001, Judge Wolin named five “Court Appointed Consultants” (the “Consultants”) to assist him in the Five Asbestos Cases. The five individuals he named were David Gross, Judson Hamlin, William Dreier, John Keefe, and Francis McGovern, all of whom had prior experience with asbestos or mass tort litigation. 2 Pursuant to Judge Wo-lin’s order, the Consultants were to “advise the Court and to undertake such responsibilities, including ... mediation of disputes, holding case management conferences, and consultation with counsel, as the Court may delegate to them individually.” The Consultants could also be delegated “certain authority to hear matters and to advise the Court on issues that may arise in these five large Chapter 11 cases.” Judge Wolin’s order provided that he could, “without further notice, appoint any of the Court-Appointed Consultants to act as a Special Master to hear any disputed matter and to make a report and recommendation to the Court on the disposition of such matter.” In connection with his order, Judge Wolin announced at a Case Management conference that he would conduct ex parte meetings with the attorneys. C. The G-I Holdings Bankruptcy Two months earlier, the Bankruptcy Court for the District of New Jersey had appointed Judson Hamlin, one of the Consultants, to serve as the “Legal Representative of Present and Future Holders of Asbestos-Related Demands” in still another asbestos-related bankruptcy case captioned In re G-I Holdings Inc. The G-I Holdings case is not related to the Five Asbestos Cases and Judge Wolin has played no role in the G-I Holdings proceedings. The G-I Holdings bankruptcy does, however, share one common characteristic with the Five Asbestos Cases assigned to Judge Wolin: it too faced a wave of asbestos lawsuits. See Official Comm. of Asbestos Claimants of G-I Holding, Inc. v. Heyman, 277 B.R. 20, 24-28 (S.D.N.Y.2002) (explaining that, “[bjegin- *216 ning in the late 1970’s, large numbers of claimants began to bring lawsuits [against G-I Holdings ] seeking compensation for bodily injury, death and related harms inflicted by asbestos and products containing asbestos”). We have also been told that many of G-I Holdings’ significant creditors, as well as asbestos-claimant creditors, also have claims against the debtors in the Five Asbestos Cases. Mr. Hamlin was not the only Consultant who participated in the G-I Holdings bankruptcy. Less than one month after Judge Wolin appointed the five Consultants, Mr. Hamlin filed an application in G-I Holdings seeking the Bankruptcy Court’s approval to engage David Gross, another Consultant, as his local counsel. In connection with that application, Mr. Gross submitted an affidavit to the G-I Holdings Bankruptcy Court disclosing his appointment as a Consultant to Judge Wo-lin in the Five Asbestos Cases. Mr. Hamlin’s application was met with no objection and the Bankruptcy Court approved Mr. Gross as Mr. Hamlin’s counsel. D. Kensington’s Recusal Motion Almost two years later, Kensington filed a motion in the Bankruptcy Court seeking to recuse Judge Wolin from further participation in the Owens Coming bankruptcy. Kensington, which claims that it only recently learned about Messrs. Gross and Hamlin’s participation in the G-I Holdings bankruptcy, asserted that Judge Wolin was precluded under 28 U.S.C. § 455 from continuing to preside over the Owens Coming bankruptcy by virtue of the fact that two of his Consultants had conflicts of interest. In connection with that motion, Kensington sought discovery of W.R. Grace & Co., Messrs. Hamlin and Gross, and their law firms. CSFB, an agent for banks holding approximately $1.6 billion in pre-petition claims against Owens Corning and certain of its subsidiaries, filed papers supporting Judge Wolin’s recusal. Three days later, the debtors in the W.R. Grace bankruptcy filed an application in the Bankruptcy Court to appoint Mr. Hamlin as the Legal Representative for Future Asbestos Claimants of W.R. Grace & Co. The application disclosed that Mr. Hamlin was already serving as a Consultant to Judge Wolin in the Five Asbestos Cases (including, of course, the W.R. Grace bankruptcy). On October 23, 2003, Judge Wolin entered an order staying all discovery in connection with Kensington’s recusal motion. The order explained that recusal motions are often brought for improper purposes and that all discovery should be stayed until Kensington’s motion could be tested by the adversarial process. Judge Wolin also announced in his order that he intended to issue a Case Management Order in the near future governing further proceedings on the recusal motion. E. Kensington’s Mandamus Petition Dissatisfied with Judge Wolin’s decision to sua sponte stay discovery on the recusal motion, Kensington filed an Emergency Petition for a Writ of Mandamus with us on October 28, 2003. Kensington’s petition asked us to issue a Writ of Mandamus “directing Judge Wolin either (a) to disqualify himself under 28 U.S.C. § 455, or (b) to withdraw his October 23[, 2003] order suspending briefing and discovery on the recusal motion, and instead allow expedited discovery and an expedited briefing and hearing schedule on the motion.” On October 30, 2003, we issued an order staying “all proceedings affected by” Kensington’s mandamus petition (with the exception of the recusal motion) and establishing a briefing schedule. Our order invited Judge Wolin to respond to Kensing-ton ’s petition. *217 Meanwhile, Judge Wolin issued a Case Management Order on October 28, 2003 which left his stay of discovery order in place, but directed each of the five Consultants to submit affidavits setting forth certain information relating to their activities in the Five Asbestos Cases and the G-I Holdings bankruptcy. The order also established a briefing schedule on Kensing-ton ’s recusal motion. F. The District Court’s Responses In response to our invitation, Judge Wo-lin submitted three written responses to Kensington’s petition. In his first response, Judge Wolin announced that he would “judge the Motion to Recuse on the law and facts presented after all of the parties have been heard in full” and that he would seek to resolve the motion as quickly as possible. Judge Wolin also explained that he had recently finished a four-week bench trial in the Otvens Coming bankruptcy case concerning the issue of “substantive consolidation.” That trial was necessary because Owens Coming had proposed a plan of reorganization which, if adopted, would substantively consolidate Owens Coming and its debtor-subsidiaries into a single bankruptcy estate. It is alleged that Kensington and CSFB have opposed substantive consolidation because it would significantly reduce their aggregate recovery. 3 Judge Wolin stated in his response that he was preparing an opinion on substantive consolidation, but had not yet issued the opinion when Kensington filed its motion seeking his recusal. Judge Wolin also maintained that he had no information regarding the G-I Holdings bankruptcy. In his second response, Judge Wolin addressed the suggestion made by D.K. Acquisition Partners that his ex parte communications with the Consultants and various attorneys somehow required his recusal. 4 Judge Wolin explained that he had announced at his initial Case Management conference on December 20, 2001, that the size and complexity of the Five Asbestos Cases would require him to have ex parte communications. The purpose of the ex parte communications, according to Judge Wolin, “was to ensure that each committee or corporate constituency was afforded the opportunity to provide to the Court insights as to why, in the competition for limited dollars, its claim was just.” Judge Wolin also wrote that, “[gjiven that these meetings occurred on a regular basis without complaint and given that the December 20, 2001 case management conference alerted all concerned that ex parte meetings were part of the District Court’s case management plan, it strikes a discordant note that the conduct of ex parte conferences would be the ground for a recusal motion.” In his third response, Judge Wolin again defended his Case Management methods *218 and, in particular, his decision to allow ex parte communications. Judge Wolin explained that the public disclosure of proprietary or other sensitive information in the context of a bankruptcy proceeding can have significant economic ramifications and therefore “it was the expressed intent of the District Court to provide access to any and all interested parties free of the constraint of damning admissions in a public arena.” Judge Wolin also recommended, for the first time, that we — the Court of Appeals — decide the merits of Kensington’s Petition for Mandamus without further delay, although he stood ready to decide the recusal motions if we found the record to be insufficient. G.The Consultants’ Affidavits In compliance with Judge Wolin’s order, each of the Consultants filed affidavits in the District Court on November 14, 2003 describing their activities in the Five Asbestos Cases. Mr. Gross stated in his affidavit that Judge Wolin had been aware “[a]t all relevant times” of Mr. Gross’s role in the G-I Holdings bankruptcy case. Mr. Gross also explained that his role in the Five Asbestos Cases was essentially “that of a settlement facilitator” and that he had never “assisted in any way in Judge Wo-lin’s decision-making function” or “discussed with Judge Wolin ... any legal or factual issues before the Court or likely to come before the Court in any of the five bankruptcies assigned to Judge Wolin, or, ... in the G-I Holdings case.” Mr. Hamlin explained in his affidavit that his assignments as a Consultant to Judge Wolin “consisted of reviewing appeals from the Delaware Bankruptcy Court and submitting a draft opinion in each of the [Five Asbestos Cases],” a role Mr. Hamlin likened “to that of a magistrate [judge] in providing recommended findings of fact and conclusions of law to a district judge.” Mr. Hamlin asserted that he had prepared only one draft opinion in the Owens Coming bankruptcy and that Judge Wolin had not used that particular opinion. Mr. Hamlin also stated that he “did not discuss any substantive issues in the [Owens Coming ] case with Judge Wo-lin at any time.” H.The Answers On November 21, 2003, Answers to the mandamus petitions were filed. The following opposed Kensington’s efforts to disqualify Judge Wolin: Owens Corning Corp., the Official Committee of Asbestos Creditors in Owens Corning, James McMonagle (the Legal Representative for Owens Coming’s Asbestos Claimants), and the Baron & Budd Claimants. CSFB supported Judge Wolin’s disqualification. I.D.K. Acquisition Partners’ Mandamus Petition On November 14, 2003, the same day that the Consultants submitted their affidavits to the District Court, D.K. Acquisition Partners filed a motion in the W.R. Grace bankruptcy case seeking Judge Wo-lin’s recusal. A week later, D.K. Acquisition Partners filed an emergency petition with us seeking the same relief sought by Kensington. We ordered that D.K. Acquisition Partners’ mandamus petition be consolidated with the Kensington petition. We have since received Answers to D.K. Acquisition Partners’ petition from W.R. Grace & Co., the Official Committee of W.R. Grace Asbestos Claimants, and the Unofficial Committee of Select W.R. Grace Asbestos Claimants. J.Hearing On December 12, 2003, we held the hearing scheduled by our order of November 21, 2003. Both parties and amici were *219 heard and various arguments and representations urged, on the one hand, that we disqualify Judge Wolin and, on the other hand, that we deny disqualification. Among the representations which we have taken into consideration insofar as expediting our ruling and Judge Wolin’s ruling is Mr. Inselbuch’s representation that since the filing of these cases close to 30,000 asbestos claimants had died of mesothelio-ma and lung cancer and that 15 victims “will die today as a matter of statistics.” Hence, he claimed delay was fatal. II. We turn now to the governing legal standards. Kensington and D.K Acquisition Partners both seek Judge Wolin’s disqualification under 28 U.S.C. § 455(a). 5 Kensington stated in its Petition for Mandamus that it was also seeking Judge Wo-lin’s disqualification under § 455(b)(1), 6 but it has relied primarily on § 455(a). A. Standards Governing Writs of Mandamus We have the power to issue writs of mandamus under the All Writs Act, 28 U.S.C. § 1651(a), which provides that “[t]he Supreme Court and all courts established by Act of Congress may issue all writs necessary or appropriate in aid of them respective jurisdictions and agreeable to the usages and principles of law.” See Haines v. Liggett Group Inc., 975 F.2d 81 (3d Cir.1992). A writ of mandamus is, however, an extraordinary form of relief. See In re Federal-Mogul Global, Inc., 300 F.3d 368, 379 (3d Cir.2002). “As the adjective ‘extraordinary’ implies, ... courts of appeals must be chary in exercising that power: ‘[Mjandamus must not be used as a mere substitute for appeal.’ ” In re Sch. Asbestos Litig., 977 F.2d 764, 772 (3d Cir.1992) (quoting Westinghouse Elec. Corp. v. Republic of Philippines, 951 F.2d 1414, 1422 (3d Cir.1991)). If, in effect, an appeal will lie, mandamus will not. “Even when the petitioner shows that there is no other adequate means to obtain the desired relief, and also has shown a ‘clear and indisputable’ right to issuance of the writ, the exercise of our power is largely discretionary.” Alexander v. Primerica Holdings, Inc., 10 F.3d 155, 163 (3d Cir.1993) (quoting Will v. United States, 389 U.S. 90, 96, 88 S.Ct. 269, 19 L.Ed.2d 305 (1967) (citation omitted)). B. Mandamus as a Means For Disqualifying a Judge “Mandamus is a proper means for this court to review a district court judge’s refusal to recuse from a case pursuant to 28 U.S.C. § 455(a), where the judge’s impartiality might reasonably be questioned.” 7 Alexander, 10 F.3d at 163. Indeed, “[vjirtually every court of appeals has recognized the necessity and propriety of interlocutory review of disqualification issues on petitions for mandamus ‘to en *220 sure that judges do not adjudicate cases that they have no statutory power to hear.’ ” Alexander, 10 F.3d at 163 (quoting School Asbestos, 977 F.2d at 778). Less well established, however, is the inclination of a court of appeals to entertain a mandamus petition seeking a district court judge’s disqualification when the district court judge has not yet ruled on a motion for recusal pending before him. C. Standard for Disqualification under § 4.55(a) Whenever a judge’s impartiality “might reasonably be questioned” in a judicial proceeding, 28 U.S.C. § 455(a) requires that the judge disqualify himself. The test for recusal under § 455(a) is whether a reasonable person, with knowledge of all the facts, would conclude that the judge’s impartiality might reasonably be questioned. Edelstein v. Wilentz, 812 F.2d 128 (3d Cir.1987). It is of no consequence that the judge is not actually biased because § 455(a) “concerns not only fairness to individual litigants, but, equally important, it concerns ‘the public’s confidence in the judiciary, which may be irreparably harmed if a case is allowed to proceed before a judge who appears to be tainted.’ ” Alexander v. Primerica Holdings, Inc., 10 F.3d 155, 162 (3d Cir.1993) (quoting School Asbestos, 977 F.2d at 776) (emphasis added). In Haines v. Liggett Group Inc., 975 F.2d 81 (3d Cir.1992), where a mandamus petition filed by leading tobacco companies charged that the district court judge had disqualified himself when he stated that the tobacco industry concealed smoking risks and “despite some rising pretenders, ... may be the king of concealment and disinformation,” we held that “[ijmpartiality and the appearance of impartiality in a judicial officer are the sine qua non of the American legal system” and that “[a]ny tribunal permitted by law to try cases and controversies not only must be unbiased but also must avoid even the appearance of bias.” Id. at 98 (quoting Lewis v. Curtis, 671 F.2d 779, 789 (3d Cir.1982)). We went on to say in Haines that the district court judge in question had “been a distinguished member of the federal judiciary for almost 15 years and [was] no stranger to this court; he [was] well known and respected for magnificent abilities and outstanding jurisprudential and judicial temperament.” Id. Judge Wolin is no different — he exhibits the same admirable qualities and talents. We went on to say in Haines that: On the basis of our collective experience, we would not agree that [the district court judge was] incapable of discharging judicial duties free from bias or prejudice. Unfortunately, that is not the test. It is not our subjective impressions of his impartiality gleaned after reviewing his decisions these many years; rather, the polestar is “[i]mpar-tiality and the appearance of impartiality.” Id. D. Standard for Disqualification under § 455(b)(1) Whereas § 455(a) is a catchall disqualification provision, § 455(b)(1) is more narrow in that it requires a judge to disqualify himself only if “he has a personal bias or prejudice concerning a party, or personal knowledge of disputed evidentiary facts concerning the proceeding.” 28 U.S.C. § 455(b)(1); see also Liteky v. United States, 510 U.S. 540, 548, 114 S.Ct. 1147, 127 L.Ed.2d 474 (1994) (describing § 455(a) as a “ ‘catchall’ recusal provision, covering both ‘interest or relationship’ and ‘bias or prejudice’ grounds”). Unlike disqualification under § 455(a), however, *221 which may be waived by the parties, the grounds for disqualification under § 455(b)(1) generally cannot be waived. See 28 U.S.C. § 455(e). As noted above, Kensington’s mandamus petition relies on both § 455(a) and § 455(b)(1). D.K. Acquisition Partners’ petition was brought under § 455(a). III. In light of these standards, we now examine the arguments presented by the parties and amicus curiae both in support of, and in opposition to, Judge Wolin’s recusal. A. Arguments in Support of Disqualification The parties asking for Judge Wolin’s disqualification first seek to demonstrate that Messrs. Gross and Hamlin’s dual roles in the Five Asbestos Cases and G-I Holdings gave rise to potential and actual conflicts of interest. In doing so, these parties contend, among other things, that: • It is highly likely that a significant number of the future asbestos claimants in G-I Holdings will also be future claimants in the Five Asbestos Cases, 8 thus creating a conflict between Messrs. Gross and Hamlin’s duty to zealously represent their clients, on the one hand, and their duty to give Judge Wolin neutral advice, on the other; • Messrs. Gross and Hamlin never disclosed to the parties in the Five Asbestos Cases that they were representing the asbestos claimants in G-I Holdings; • Messrs. Gross and Hamlin repeatedly used their positions as advisors to Judge Wolin to advocate their clients’ partisan interests in G-I Holdings; • Messrs. Gross and Hamlin challenged and criticized in G-I Holdings an expert witness who is likely to testify in Owens Coming; • There were numerous instances in which Messrs. Hamlin and Gross, as partisan advocates for the asbestos claimants in G-I Holdings, met ex parte with James McMonagle, the Legal Representative for Future Asbestos Claimants in Oivens Coming, to discuss “common futures issues;” and • The debtors in W.R. Grace applied to the Bankruptcy Court to have Mr. Hamlin appointed as the legal representative for future asbestos claimants — an application which, if granted, would give rise to another conflict. Building on that argument, the Petitioners next contend that, through his close association with the Consultants, Judge Wolin was “tainted” by association with Messrs. Gross and Hamlin, such that a reasonable person might question his impartiality. The Petitioners emphasize that it matters not whether Judge Wolin actually knew of the conflicts, but only that, as a result of Messrs. Hamlin and Gross’s dual and conflicting roles, a reasonable person might question Judge Wolin’s partiality. The Petitioners also point out that the Washington Legal Foundation, the only party with no direct interest in this case, supports Judge Wolin’s recusal. 9 *222 The Petitioners also emphasize that Judge Wolin apparently knew all along that Messrs. Hamlin and Gross were serving as partisans on behalf of the future claimants in G-I Holdings, but did not make a disclosure to the parties. The Petitioners argue that the appearance of impropriety was further fostered by the extensive ex parte communications between Judge Wolin and the Consultants. Taken together, the Petitioners contend that these factors conclusively demonstrate that Judge Wolin’s impartiality might be questioned, thereby mandating his removal. B. Arguments Against Disqualification The parties opposing Judge Wolin’s disqualification argue first and foremost that the Petitions for Mandamus should be denied because they are untimely. See United States v. York, 888 F.2d 1050, 1055 (5th Cir.1989) (stating that timeliness requirement “prohibits knowing concealment of an ethical issue for strategic purposes”). The premise underlying this argument is that the Petitioners knew, or reasonably should have known, about Messrs. Gross and Hamlin’s roles in G-I Holdings long ago, but chose not to act on that information until recently. Those parties point out, for example, that (a) Messrs. Gross and Hamlin’s participation in G-I Holdings was a matter of public record and was widely reported in the asbestos litigation trade press; and (b) that certain law firms representing the creditors in the Owens Coming bankruptcy received notice of Messrs. Gross and Hamlin’s participation in G-I Holdings. 10 In addition to the timeliness argument, the parties opposing the mandamus petitions contend that: • Kensington’s petition for mandamus is merely a litigation tactic intended to derail the Owens Coming bankruptcy, as evidenced by the “barrage of motions and lawsuits” purportedly filed by Kensington beginning in October 2003; • The petitions for mandamus have failed to demonstrate that Judge Wo-lin’s association with Messrs. Gross and Hamlin requires his recusal; and • The complexity of the Five Asbestos Cases required a novel case management approach, thus justifying the use of advisors with broad powers and ex parte communications. 11 Finally, certain parties have tried to impress upon us that even if Judge Wolin *223 must be disqualified from the Oioens Coming bankruptcy, it does not necessarily follow that he must also be disqualified from presiding over the remaining four bankruptcies. For example, W.R. Grace & Co. believes the parties in the W.R. Grace bankruptcy should await a ruling in the Owens Corning bankruptcy before concluding whether similar relief should be extended to the W.R. Grace bankruptcy. In a similar vein, Armstrong World Industries submitted a Statement solely to emphasize that Judge Wolin and the Consultants played a minimal role in the Armstrong bankruptcy. IV. After reviewing the written submissions from the parties, the District Court, and amicus cwtiae, and after hearing oral argument on December 12, 2003, we will, while retaining jurisdiction, remand this matter to Judge Wolin so that he can, in the first instance, decide (following expedited discovery) whether he should recuse himself from one or more of the Five Asbestos Cases. Our recital of the parties’ arguments as they are presented in this opinion are not to be taken or interpreted as expressions or inclinations of this Court respecting the issue of recu-sal or disqualification. First and foremost, we are concerned that the existing record is inadequate and incomplete. We are reluctant to act in a complex situation such as this one, where so many vital interests are at stake, without a developed evidentiary record. We do not fault the parties. Judge Wolin’s stay of discovery order prevented the parties from developing evidence of the circumstances which they allege give rise to the recusal motions. Hence, a remand allowing for discovery is necessary because the primary inquiry to which we must respond pursuant to 28 U.S.C. § 455(a) is “whether a reasonable person knowing all the circumstances would harbor doubts concerning the judge’s impartiality” — an inquiry which necessarily requires that we know all the circumstances. Jones v. Pittsburgh Nat’l Corp., 899 F.2d 1350, 1356 (3d Cir.1990) (emphasis added). Accordingly, we require in order to discharge our judicial function that the evidentiary record in this case be developed. In its Reply brief, Kensington asserted that, in light of the extensive briefing and scheduled oral argument, there was “no need to remand this case for further fact-finding” and that we could “and should enter a recusal order on the existing record.” Briefs without an evidentiary basis and oral argument are, however, a poor substitute for a developed evidentiary record which can result from an adversarial discovery process. Among other things, discovery in this case may shed light on such matters as (i) the full extent of the Consultants’ activities in the Five Asbestos Cases; (ii) Messrs. Gross and Hamlin’s activities in G-I Holdings; (iii) the timeliness of the Petitions for Mandamus; and (iv) the extent to which recusal, if warranted in one of the bankruptcies, must be held to extend to the other bankruptcies. Because discovery is not an exercise which this Court can reasonably conduct, but is more the function of the District Court, we will vacate the stay Judge Wolin entered in his October 23, 2003 order and remand this matter to Judge Wolin so that his recusal ruling, which we direct that he make, may benefit from the discovery engaged in by the parties. 12 Second, our decision to remand is impelled in large part by the standards *224 governing the issuance of a writ of mandamus. It is well established that a writ of mandamus will issue only if the party seeking the writ has “no other adequate means to attain the desired relief.” In re Sharon Steel Corp., 918 F.2d 434, 436 (3d Cir.1990). Clearly that standard cannot be met where a motion seeking the district judge’s disqualification — the same relief sought in the mandamus petitions — is pending in the district court. Finally, our decision to remand this matter to Judge Wolin is guided by the principle that “[discretion is confided in the district judge in the first instance to determine whether to disqualify himself ... [because the] judge presiding over a ease is in the best position to appreciate the implications of those matters alleged in a recusal motion.” In re Drexel Burnham Lambert Inc., 861 F.2d 1307, 1312 (2d Cir.1988) (citation omitted). This principle rings particularly ti'ue where, as here, the district court judge has presided over (i) an extraordinarily complex litigation (ii) involving a multitude of parties (iii) for an extended period of time. Judge Wolin has been intimately involved in these proceedings for the past two years and, as demonstrated by his written responses, has acquired a familiarity with the issues beyond ours. Accordingly, he is in the best position to understand “the implications of those matters alleged in [the] recusal motion[s].” Id. We realize, of course, that our decision to remand this matter to Judge Wolin will result in some delay, which causes us great concern. Not only can delay have unintended (and undesirable) ramifications for the debtors-in-bankruptcy; it can have a much more personal effect on the asbestos claimants who have filed claims against the debtors-in-bankruptcy and their related entities. 13 We nevertheless believe that a short delay so that an evidentiary record may be developed is to be preferred rather than making an ill-informed decision on allegations alone. 14 In an attempt to re *225 duce the delay, however, we will order that expedited discovery and Judge Wolin’s ruling on the recusal motions be completed no later than January 31, 2004. While this might ordinarily be deemed too short a time for discovery, we believe that it is manageable under the district court judge’s guidance and supervision. Indeed, Kensington’s attorney advised us at oral argument that expedited discovery probably could be completed in two to three weeks. V. For the foregoing reasons, we will (i) vacate the discovery stay imposed by Judge Wolin in his order of October 23, 2003; (ii) direct that expedited discovery proceed without interruption, objections, or extensions; and (iii) direct Judge Wolin to rule on the recusal motions pending before him no later than January 31, 2004. This panel will retain jurisdiction in the event proceedings subsequent to Judge Wolin’s ruling are required. Footnotes [1] Chief Judge Becker's term as Chief Judge of this Court ended on May 4, 2003. He was succeeded by Chief Judge Scirica on that date. [2] Consultants Hamlin, Dreier, and Keefe are former judges of the Appellate Division of the New Jersey Superior Court; Consultant McGovern is a professor of law at Duke University; and Consultant Gross is an experienced litigator in asbestos-related lawsuits. [3] Owens Corning has explained that: Unlike Owens Coming's other major unsecured creditors, which have direct claims against the parent company alone, [Kens-ington and CSFB have] guarantees from certain Owens Corning subsidiaries. If these subsidiary guarantees are enforceable, [they] will receive a greater proportionate recovery than that received by other unsecured creditors. Substantive consolidation would eliminate this claimed disproportionate recovery by [.Kensington and CSFB], [4] Around the same time that Judge Wolin filed his second response, USG Corporation filed a motion in the Bankruptcy Court seeking his recusal. Unlike some of the other parties seeking Judge Wolin's removal, USG Corporation argued that the extensive ex parte communications between Judge Wolin and the Consultants (as well as other persons) provide an independent basis for Judge Wo-lin's disqualification under both 28 U.S.C. § 455(a) and (b)(1). [5] § 455(a) provides in its entirety that ”[a]ny justice, judge, or magistrate judge of the United States shall disqualify himself in any proceeding in which his impartiality might reasonably be questioned.” [6] § 455(b)(1) provides that a judge must disqualify himself "[wjhere he has a personal bias or prejudice concerning a party, or personal knowledge of disputed evidentiary facts concerning the proceeding.” [7] In City of Pittsburgh v. Simmons, 729 F.2d 953, 954 (3d Cir.1984), we relied on our longstanding precedent that a denial of recusal did not constitute a final order and thus appellate jurisdiction could not be entertained. That case did not, however, specify the statutory recusal that was being sought. In School Asbestos, Judge Becker of our Court held that a Petition for Mandamus predicated on § 455 would be entertained by this Court. See School Asbestos, 977 F.2d at 775. [8] The Petitioners claim that, "[b]ecause asbestos claimants frequently claim to have been exposed to asbestos-containing products produced by more than one manufacturer, or are unsure of the identity of the manufacturer who produced the product that allegedly caused their injuries, it is not uncommon for asbestos claimants to assert claims against different manufacturers.” [9] Owens Corning challenges the Washington Legal Foundation's purported non-interested party status, claiming that it is "allied” with the commercial creditors and regularly cam *222 paigns for asbestos tort reform in the media, courts, and U.S. Congress. [10] Kensington and D.K. Acquisition Partners vigorously dispute any suggestion that they deliberately delayed filing their respective Petitions for Mandamus. Kensington flatly states that it had "no knowledge” of Messrs. Gross and Hamlin's participation in G-I Holdings until two weeks before it filed its recusal motion. For its part, D.K. Acquisition Partners claims that it first learned about Messrs. Gross and Hamlin's role in G-I Holdings when Kensington filed its recusal motion. [11] We must confess that we have struggled to define the role and position of the "Consultants.” To the best of our knowledge, the Consultants' roles and positions are truly novel in terms of the powers they were assigned. See, e.g., Fed.R.Civ.P. 53(a) (authorizing district courts to appoint "masters”); Fed. R.Evid. 706 (permitting "court-appointed experts”); 28 U.S.C. § 636(b)(1) (permitting referrals to magistrate judges); see also December 1, 2003 Amendment to Fed.R.Civ.P. 53 (providing, inter alia, that a "Master must not have a relationship to the parties, counsel, action, or court that would require disqualification of a judge under 28 U.S.C. § 455”). At oral argument, we asked Owens Coming's attorney if he had ever heard of a judge appointing this kind of a "hybrid” advisor. He replied that he had not. [12] In remanding this matter to Judge Wolin, we are deviating slightly from the relief re *224 quested by Kensington. In its Reply brief, Kensington requested that, in the event we decided additional factfinding was required, we remand the motion for recusal to a different judge for resolution. Kensington believed this was necessitated by certain remarks Judge Wolin made in his written responses to the mandamus petitions, including his statement that the timing of D.K. Acquisition Partners' recusal motion “speaks volumes as to the legitimacy of the Motion for Recusal of the District Court.” We decline to remand this matter to a different judge because we do not believe Judge Wolin’s written responses demonstrate that he will be unable to render an impartial decision on the recusal motions. Indeed, Judge Wolin stated in his first response that, "[i]n order to preclude any unwarranted conclusion” that he was prematurely deciding the substantive merits of the motion to recuse, he would restrict his responses to procedural matters. Moreover, we harbor serious reservations about assigning a § 455 disqualification motion to a different judge, particularly at this stage of the proceedings. See, e.g., Bernard v. Coyne, 31 F.3d 842, 843 (9th Cir.1994) (holding that responsibility for deciding § 455 recusal motion lies solely with judge to whom motion is directed); Njie v. Lubbock County, 999 F.Supp. 858, 860 (N.D.Tex.1998) (concluding that if recusal motion is made under § 455, "the judge whose impartiality is being questioned rules on the motions”). Compare 28 U.S.C. § 144 (requiring "another judge” to rule on recusal motion if supporting affidavit meets threshold "sufficiency” test). [13] At oral argument, the attorney representing the Official Committee of Asbestos Claimants in Owens Coming represented to the Court that approximately 30,000 of the asbestos claimants in the Five Asbestos Claimants have died from asbestos-related diseases since the cases were filed and that statistics would reveal that 15 asbestos-related victims would die each day. [14] We inquired at oral argument about the effect Judge Wolin's disqualification would have on the Five Asbestos Cases. Owens *225 Coming's counsel replied that assigning another judge to the Owens Corning bankruptcy would set the proceedings in Owens Coming back at least one year. By expediting the filing of this opinion and by ordering compliance with our directions which establish a deadline or outside date of January 31, 2004, we believe any delay is minimal, but in this case essential.