I was at the Wisconsin game as well,as the MSU and PU games that followed. Some, not all of the 8,000 student section chanted his name at the MSU and PU games. I assure you the entire crowd did not. Hell, he was booed before the game. To be fair and in context. most fans did not know at that time what all was happening and how much was accurate. We knew there were potential NCAA violations. We certainly did not know the gravity of the roster situation. Senderoff had been dismissed in Oct and most thought he was the issue until new allegations surfaced publicly late in the season.
IIRC Sampson's contract made immediate suspension during an investigation difficult/risky. In the end There were a lot of national reporters and pundits critical of IU for being too hasty in dismissing Sampson. I don't agree with that at all, they did what was necessary/ ethical to minimize the possibility of a very likely, ugly, and drawn out wrongful termination suit.