I can't confirm this as fact, but I've been told that the reason the OSU situation (Hidden Tressel emails) came to light is because Missouri made a FOIA about collusion between Nebraska and the Big Ten. Missouri felt they were the favorite to land in the Big Ten and thought there were some underhanded dealings when Nebraska was chosen.
Per OSU
According to Ohio State's press release of March 9, 2011: "Head Football Coach Jim Tressel violated provisions of NCAA Bylaw 10.1 when he failed to notify the university about information received involving two football student-athletes. The university became aware of this situation [the Cicero emails] on Jan. 13, while reviewing information on an unrelated legal issue."
