The SAG-AFTRA board of directors has unanimously approved a statement denouncing as "deplorable" a recent letter that accused the union's top staff of a laundry list of financial misdeeds. The board, however, also approved a motion to ask the union's general counsel – who is one of the accused – to "direct an independent outside counsel to review, with the assistance of an auditor, the questions raised in the correspondence." That review was requested by SAG-AFTRA…