Such conclusory allegations do not support a finding that Aiello had a personal stake in the outcome of the disciplinary hearing. McGuinness v. Dubois, 1995 WL 169500 (D.Mass.) (unpublished), aff'd 887 F. Supp. 20 (D.Mass. 1996), rev'd on other grounds, aff'd in part 75 F.3d 794 (1st Cir. 1996) (complaint challenging impartiality of disciplinary hearing officer fails "[i]n the absence of allegations of specific facts indicating bias or other improper motive"). Accordingly, the plaintiff's due process claims must fail.