It doesn't seem that Joe can win here. We loose, it is Joe's fault, should have called more time outs. We win, it was in spite of Joe's coaching. We have a bad game, Joe should have thrown a chair in the locker room.
I don't know how good a coach he is right now and I don't know how much upside he has. But to me, he is doing just fine in his first season, after being thrown into it under difficult circumstances. Sure, he inherited a really good team, but so didn't Ime.
One thing I do believe is that no matter what Joe does this season, next season should be better, maybe much better. And this season hasn't been all that bad, rather it has been really good.
It is really hard to judge a coach on one season or one playoff run. Maybe the players are carrying the coach. The coach is just rolling the ball out there. Maybe the team is just really bad (look at Pop in SAN the last few years). But how bad can Joe be even in the worst case, based on the results of this season so far?