What it it makes me question is if Paterno downplayed the incident on purpose and wasn't truthful. He calls it horseplay, MM said it was sexual, CSS goes with Paterno. Paterno then lies to the GJ. It certainly seems plausible.
Downplays why? What is the motivation? And how do you keep it quiet? There was no mechanism of control.
It's much more plausible that McQ was intimidated by the prosecution and beefed up his story 10 years later.