We VACATE the judgment of the district court and REMAND for reconsideration in light of the Supreme Court’s decision in Hall Street Associates, L.L.C. v. Mattel, Inc., — U.S.-, 128 S.Ct. 1396, 170 L.Ed.2d 254 (2008) (holding that, regardless of the parties’ agreement to the contrary, district courts must review an arbitrator’s findings of fact and conclusions of law under the highly deferential standard set forth in 9 U.S.C. § 10(a)).