He's pushing you away :(
FL RB Demetrius Hart, the consensus top recruit in Michigan's class of 2011, announced today that he has decommitted, and will instead give his pledge to Alabama. This move has been rumored for a few weeks, and has now come to fruition.
This situation sucks, but there are a few things to keep in mind. You can't praise the "OMG SNAKE OILZ!~!~!~!~!~!~!" Rich Rodriguez used to land the likes of Roy Roundtree and Jibreel Black without realizing that sometimes, what goes around comes around.
On the other hand, perhaps the most annoying part is that the school gaining from Michigan's loss is Alabama, where it's likely he'll be kicked off the team in a couple years to make room for the Next Big Thing within a couple years anyway. See - they're already getting started making room for him!
This is unlikely to be the only decommit in this class, even once the coaching situation is settled. For all recruiting classes - but this one especially - it's probably best to wait and see how it all plays out.