I think we are all assuming he knew something to a degree that we would all feel morally obligated to report such things to the police. ESPN was just speaking about what he actually was told by the grad assistant and what he understood. They said Joe's testimony to the grand jury was consistent with the grad assistants testimony and they don't believe Joe has a real understanding about what was being reported. It's as if he was either confused as to what was being reported or his level of understanding simply wasn't accurate so he sent it up the chain to someone higher and went back to coaching. Without really knowing what he understood I'm not sure I can armchair quarterback the guys morals.
This is a good sumation of what I think is accurate. I can see some posts indirectly questioning my stance on this. Let me be clear, I don't support any type of this behavior and even I question why it was not taken into his own hands (Joe Pa's) and just fire the guy. Joe Pa was not given the full story when he was notified of what was happening. Suspicions or not, as the head coach he had all the power to see to the termination of the guy's career and certainly his time at PSU. Why this at the very least was not done I don't know.
What gets me is because of this whole ordeal PSU is getting a black eye as a whole. PSU is much more than the football program.