Not that I don't agree with you....
But when we would lose games in the final minutes/quarters, it wasn't just solely his last minute coaching.. It was also because AI, AI2, and Webber were never fresh by the end of the game.. Yeah, AI may not have been 'tired' but he wasn't fresh.. You see so many coaches resting their star players for the start of the 4th quarter, just so they can give everything they have, if needed, in the end.. MO didn't know how to use what he had correctly..
I say add depth, give him at least one more chance.. If nothing improves from a coaching standpoint, try to do like Knicks, and attempt to force him to quit..