Football coaches do a great job at teaching kids how to run block, block down field, pass protect, and cut block, but can they address a mental block? My guess is no, Jimmy is known to solve all the world's problems with a NJ Strip and a glass of milk.
This team/program has a mental block when they play on the road and maybe even when they play at night. Michigan is clearly uncomfortable in any situation that is not a noon kick at the Big House. I would say, it must have something to do with Harbaugh, but this issue was here well before he even got to Ann Arbor.