Rule 60(b) provides that the district court may relieve a party or a party's legal representative from a final judgment, order, or proceeding in five enumerated circumstances and, according to the sixth subpart, for 'any other reason justifying relief from the operation of the judgment.' Fed.R.Civ.P. 60(b)(6). Subpart (6) is 'properly invoked where there are extraordinary circumstances or where the judgment may work an extreme and undue hardship.' Matarese v. LeFevre, 801 F.2d 98, 106 (internal quotations and citations omitted).
Subpart (6) of the said Rule, as stated by our Court in Matarese v. LeFevre, 801 F.2d 98 (2d Cir.1986) at 106: 'confers broad discretion on the trial court to grant relief when 'appropriate to accomplish justice,' ' International Controls Corp. v. Vesco, 556 F.2d 665, 668 n. 2 (2d Cir.1977) (quoting Klapprott v. United States, 335 U.S. 601, 615, 69 S.Ct. 384, 390, 93 L.Ed. 266 (plurality opinion of Black, J.), modified on other grounds, 336 U.S. 942, 69 S.Ct. 384, 93 L.Ed. 266 (1949)), cert. denied, 434 U.S. 1014, 98 S.Ct. 730, 54 L.Ed.2d 758 (1978); it constitutes a 'grand reservoir of equitable power to do justice in a particular case,' Radack ...