Realistically, Nebraska is stuck with Frost for now, this season. I'm sort of amazed he could appear to be a pretty good coach previously and now look so ill prepared, perhaps the roster is just not what he needs to perform. Bad apples, lack of unity, dissension, it would be tough for a coach to fix that if it exists.
I saw it my junior year in HS basketball, we had an OK team but with factions. The factions graduated and the next year we had a very good team.