Renaldo was one of the hardest working players on the team for the past two years. His problem was he made terrible decisions with the basketball...bad shots, bad passes, bad times to dribble.
He also tended to panic and do something weird at times. But, of course, every time he made a mistake Pearl would yank him out and ream him. Obviously that's no way to calm a jittery player down. The other weird thing about it is Pearl isn't known for benching a guy for mistakes. Usually he lets them play through them (see Scotty Hopson, for instance. Or JP Prince. Or Maze. Or Goins. Or Tatum. Or JaJuan.).
Just a doghouse thing, I guess.