Can a lawyer who acted in good faith and without undue influence over his client in a civil rescission action against a local authority have any credibility to be considered a witness?

Significantly, petitioner failed to convince either the local administrative committee or the court in the civil rescission action that he acted in good faith and without undue influence over his client. Petitioner's credibility as a witness being at issue, this court must give great weight to [1 Cal.3d 18] the findings of the local administrative committee. (Corn v. State Bar, supra, 68 Cal.2d 461, 466--467(5), 67 Cal.Rptr. 401, 439 P.2d 313.)