A little too early to predict, IMO. These guys have the talent to go on another long run if things get fixed, but the psyche is hard to predict, so maybe some doubts linger...
In the long run, I think they'll get their mind right and come out of this stronger than ever. It's certainly better to identify weaknesses now with ample time to work on them, than further down the road. This year will make Fred a better coach, that's for sure. He's still pretty new to the game with a lot to learn.
Doc's helped a lot with improving defensive consistency and intensity, and if you play good defense, you can stay in just about any game.