Pressure of a big job makes you cut corners. I don't know Penny but he's never struck me as a super ethical person to begin with. I've always considered him more or a snake oil salesman in his aau coaching career.
I know a former Memphis basketball player (played before Penny's time) who knows Penny, and he said that he has a big ego. I am shocked to hear that Penny basically runs the program without any oversight. It has come out that the AD Laird Veach has no real authority over the basketball program. I would guess that is going to change with pressure from big time donors.