Because he let the cat out of the bag. At that point there was no reason for anyone in the know to keep it quiet. It is 100 times easier to have a source confirm a story that has already been reported by a reporter from a major news agency than it is to be the first to report.
He’s broken numerous stories related to the pac 12–not just USC.
Does Wilner know anything about Arizona? Who knows. He does have contacts in the Pac 12 though I can guarantee that.
Scheer has been saying for months that Arizona was going to the Big 12. Back in July he was spreading rumors about Colorado and Arizona having board meetings to plan their exit. Well that was flat out false.
So trust Scheer all you want, but he’s not much more than any other nobody that just reads twitter and message boards and then throws crap agains the wall trying to drive clicks.