I'm actually curious, what does it mean to you for someone's seat to be hot?
To me, that means that the person who could fire them is considering it. It doesn't mean that some fans of the school somewhere are saying the coach should be fired - someone's seat "heating up" has always meant that the AD or GM or whoever could fire a guy is considering or headed towards doing it.
That was pretty clearly not the case at UConn, based on the article you posted. And I'm sure they're glad it wasn't right now.