It's real easy to armchair and say RA should have taken charge during the Miller thing. But did you see Miller at the end of the game? Can you guarantee he would have performed the same if he had been yanked and put on the bench?
I, too, thought at the time that I would handle things differently. Well, it's probably a good thing I wasn't there because it appears as though I might have been wrong. RA kept Miller in, he got punished some more by the officials (and didn't lose his temper again BTW). He was still upset but he played through it. Webber talked to him. And, when it counted the most, Miller made some real contributions.
I don't condone Miller's attitude and I'm certain it's going to be addressed by RA, Webber and who knows else. In this case on this afternoon, however, I think RA handled properly. Not the way I would have handled it to be sure, but I'm not a very successful NBA coach either.
Just my three cents.