Are we sure this was an U of M admissions issue? Everyone immediately assumed that after he tweeted "due to circumstances beyond my control" it was an admissions issue (coupled with not being able to sign early) but he clarified after that tweet "that grades was not the issue". Also, Rivals reported that the issue with EE was a Michigan error and that Worthy arrived on campus in late January.
If there was issues wouldn't it be U of M admissions that releases him from the LOI (e.g. Demar Dorsey) and not the players' request. Texas would also have similar admissions to Michigan.