Where did you hear that? I'm not second guessing you, but I would have figured that Sandusky would continue to proclaim his complete innocence until his appeals are exhausted, after which he might become a cooperative witness just to get out of his cell long enough to testify.
I haven’t heard about Sandusky singing, but I would not be surprised. Years ago I used to hear G Gordon Liddy on the radio and he talked about his time in the federal pen for Watergate. He said every felon in there was framed and totally innocent, except for the child molesters. They were more than happy to sit down beside him and describe every single act in great detail. Remember Sandusky pretty much admitting guilt to Costas, I think it was?
I didn’t hear it anywhere. It’s just my personal observation. I think this is how they are finding out about all the dirty details.