No he hasn't! He has appointed KMac as caretaker, which was fine, and Houllier who was a decent manager and probably the best available to us at that time.
Losing 6-0 at Newcastle was fine was it? How about **** up another Euro campaign? was that fine?
I'm not saying Kevin did a great job, but it was a sensible decision to put him in charge until a permanent manager was brought in. He knew the players and they all had respect for him. It was always going to be short term.