The NCAA jumped in front of everybody and dropped these sanctions. Even the NCAA poo-bahs called their actions "unprecedented" and outside their normal area of operations.
You see, the issue is whether the NCAA has any business whatsoever acting as an enforcer in what is a criminal matter. The NCAA is set up to act as the rules enforcer of fairness in Collegiate athletics comeptition. Their job is to make sure that there is a level playing field for all schools in areas of intercollegiate sports. To see that, say, Auburn doesn't pay recruits to choose their school over others. To make sure there is no competitive advantage outside of agreed-upon rules.
In this instance, the NCAA jumped ahead of the normal enforcer of criminal activity (You know, the cops, Courts, etc.) and meted out various fines, Bowl bans and Scholarship limits. Being mindful of the NCAA's mission and sphere of activity, I find it very difficult to understand what competitive advantage they gained over, say, Ohio State by having an ex-coach bugger little boys in their showers. None springs to mind...
I am second to none in wishing hellish fire and complete destruction upon PSU for the abomination of Sandusky. But, it is not the NCAA's job to act in a criminal matter!
I am, however, quite curious to find out via discovery, what if any contacts there were between the BIG10/ESPN and the NCAA regarding the penalties handed down. Collusion? Hmmm...