If he is in fact seen as covering it up. That is a stretch. His sole responsibility is to take it to his superiors, that is it. He did that. Should he have done more? You are goddamn right - but believe me when I say he was not going to spend night 1 in jail. Accomplice liability is a stretch. Accessory too.
With all that said, even if you want to say he is criminally liable - it is still outside the purview of the NCAA.