I think the coaches are a fraternity that loves to "show" support for their fellow coaches at all times. I think any comments made by Matt Millen today about how Frost is doing well were said because Matt Millen is an employee of the Big Ten Conference.
Even in the darkest of times, there's lame ass positive statements made about a coach.
There's no reason Frost should be fired. But -- there's a lot of tongue in cheek with the idea that "everyone outside the program supports Frost." Sure, no one hates the guy.