I don't think so. The only people who go back and forth on coaches are sportswriters. Pirates of the pen are as flexible as the wind in backing or bashing coaches. The bottom line is the won-lost record.
Fans are different.
The people you hear backing Dunn now have been backing him all along. They just haven't had much to crow about until now. These are the people who are always behind the moves the company makes. The company in this case, being Penn State. These are the people who think Joe Paterno should have to be taken from the field of play on a stretcher rather than have someone whisper in his ear that it may be time to go.