ANN ARBOR, MI - NOVEMBER 17: Mike Hart #20 of the Michigan Wolverines looks to get around the tackle of Malcom Jenkins #2 of...

Michigan running back Mike Hart (20) is lifted up in celebration by teammates Jake Long (77) and Stephen Schilling (52) after...

ORLANDO, FL - JANUARY 1, 2008: Mike Hart #20 of the Michigan Wolverines carries the ball against the Florida Gators in the Capital One...

Michigan running back Mike Hart (20) runs as he is chased by Florida's Jermaine Cunningham (49) during the first half...

1 September 2007: Michigan running back Mike Hart answers questions from reporters after the 2007 season opener college football game between the Michigan Wolverines...

Michigan running back Mike Hart (20) is stopped by Ohio State safety Anderson Russell (21) during the first quarter of their...

Michigan's Mike Hart (20) leaps between Michigan State's Eric Greg Jones, right, and Kaleb Thornhill, right, during the...

Mike Hart #20 of the Michigan Wolverines carries the ball against Tyrell Sales #46 of the Penn State...

Michigan running back Mike Hart (20), runs past Eastern Michigan defensive back Lyle Garrison (30) to score a touchdown in the...

Michigan running back Mike Hart, right, rushes past Notre Dame's Terrail Lambert in the first half of a football game...

Michigan running back Mike Hart, right, rushes past Notre Dame's Terrail Lambert in the first half of a football game...

Michigan Wolverines running back Mike Hart ran for 49 yards during a 32 to 18 loss against the USC Trojans at the...

University of Michigan offensive lineman Jake Long (77), left, quarterback Chad Henne, center, and running back Mike Hart (20), right, pose for a portrait at Michigan's Media Day, Monday, Aug. 6, 2007, in...

Mike Hart's return made Long's decision a little easier

Michigan RB Mike Hart's harsh criticism bothered Jim Harbaugh