Most probably, but we could miss things that we don't know. He could had been caught cheating and let him go without disclosing it in a damaging control move if

Most probably, but we could miss things that we don't know. He could had been caught cheating and let him go without disclosing it in a damaging control move if we assume that everybody in his department could appear in one of his papers at least, and this could destroy the entire careers of many people or damage the ability to receive funds for everybody