While I agree or disagree with much of what has been said, this boils down to right and wrong. Let us assume that Coach McCreary was a young adult and reasonable smart and charged with educating student-athletes at PSU.
20 or not he is in a position of responsibility. Discovering something as heinous as this, demands that you take immediate action. I am appalled by the whole thing. I will give the legal system it's due and allow them to proceed, but I think that discovering this requires any man worth the air he breathes to stop the incident and immediately call the police.
Joe Pa, who was a hero of mine as a coach, still holds some worth as a knowledgeable football coach. But as a role model the looking glass is shattered by his minimal reply to the incident. While he is not guilty of the act, he is guilty by omission.