Looking back through some of the early posts, there were several factors. It still hasn't been determined if true or not but there were some rumors of herman bath mouthing ewers and it got back to the family.
The more likely reason I would think are the reasons he gave.
A chance to play for a championship, coaches that can develop him for the next level. He also mentioned his relationship with tosu qb coach. His de commitment occurred during the 2 game losing streak and it was thought that he wasn't impressed at our offense at the time.