I wish him all the best, working on non-D&D products. I think he'll be happier and it will be a better fit.
The team did terrific work and deserves a ton of commendations, however every article I read from Mike I loved, and most from him I liked in some ways but he would always throw in one or two lines that made me go Hmmm. So as a person I think he's a good guy, but as a game designer, not so much.
In terms of D&D's future, this is good news to me. Sorry to put it that way, but it's how I feel. I can't help but feel that if Mr Reynolds had been at Wizards then, instead of now, 5th edition would be even better than it is.