According to John Clayton:
http://sports.espn.go.com/nfl/column...amp;id=2239800
Clayton basically implies that Mooch was too soft and Millen will be looking for a tougher personality to replace him.
I find this interesting and rather alarming at the same time. Recall Bobby Ross. He fits that description perfectly and where did the Lions wind up with him? He couldn't handle the Lions (albeit a different group) and quit in the middle of the season.
I suggest they find R. Lee Ermey and get him to coach the Lions. There won't be any endzone celebrations if he were in charge (although there aren't any now either, since the Lions don't score).
PG