Barkley takes a big risk by sticking around

For a while on Thursday, it wasn’t clear whether USC quarterback Matt Barkley was announcing his plans for playing football in 2012 or running for public office. And then, at one point, Barkley’s micro-Favre “will-he-or-won’t-he” routine seemed like a bad SNL skit, especially when he was abruptly interrupted while standing in front of a Christmas…