I think its tough to figure out Z-Bo. Right now, he's a major part of a team whose starting lineup is pretty talented; yet they're only a contender for playoffs, and in all likelihood will find themselves out of the big picture again. So you'd think he'd have some blame in that.
But at the same time Roy's right, the lockeroom, coaching staff, and front office are a complete mess - and all of his previous teams have had similar situations, and I don't think he shoulders much of the blame for that.