Athletically reliant player who once he lost a good bit of that athleticism made his poor shot selection, inability to stretch the floor, lackadaisical effort, and unreliable team defense simply too much for the decreased productivity.
On the defense part, I always thought he got away with the notion of being a good defensive player because his unreal athleticism generated a lot of blocks and steals. However, he was always a guy that didn't really have a good understanding of defense and got by because he was so athletic. Again, once that was lost there really wasn't much actual skill there, on either side of the floor.