I don't think Wade is. It's said often enough and interpretations of Jerry's comment not withstanding, the truth is a show of progression - which already exists even at this point - is enough to validate his theory for keeping Wade this season.
Teams have to grow together and I think the most important change in Jerry's behavior might be to finally accept this, which I have the feeling he has. The one hit wonders don't provide a blue print for team building at all and 3 years is in no way adequate time to really let a team grow into a true working unit.
I really believe Wade is going to be HC of Dallas next year. But then I also believe he's going to kill one of his own demons and this team will go far in the post season.