How Much Longer Does Michigan's Carr Have Left?

At the end of last season many of the Wolverine faithful were calling for a coaching change in Ann Arbor. While acknowledging that Lloyd Carr has been great for the program, they believe his methods are old and that he is no longer the "winner" he used to be. Those critics were silenced for most of this season...until Monday. After Michigan's disappointing loss to USC on Monday, the question that is begging to be asked is how much longer does Carr have left as the head coach for Michigan? The obvious answer is only one more season if he loses to Ohio State again next season. But what if he leads his team to another magical 11-1 season? I personally believe Carr's time is limited, even if he achieves a high level of success next season.