Not going to pretend to know what happened but he still averaged 13 pts and nearly 6 rebounds while shooting 36% from 3. Also averaged 1.6 blocks per game which is absurd for a 6'5 guy(Kofi averaged 1.2 for his career and Coleman averaged 1.2 in his best season). All of that with nearly 2 assists and 1.2 steals per game is a pretty good season.I wouldn't go so far as to say "very good". His minutes were cut significantly at the end of the season. He scored 8 points in 51 minutes in his final 4 games.
He also was averaging over 15 ppg before he ended up in the doghouse.