And you would be wrong. Even the Freeh Report indicates that Sandusky's retirement had nothing to do with it. He took advantage of a standard but lucrative retirement offer to long-standing employees so that he could spend more time with his charity.
So an indication in the Freeh Report is the authority on why Sandusky retired? Bologna. I may very well be wrong, but then again, you may be wrong instead.
Of course Sandusky wanted to spend more time with his charity.
I have it on good authority (Lane Kiffin) that a career in coaching football, even as an assistant, is also lucrative.