The Cavaliers say they have suspended Bynum,—who did not travel with the team to Boston yesterday—indefinitely for conduct detrimental to the team.
Not much else is known at the moment; Cleveland's statement on the matter is very brief:
Cavaliers center Andrew Bynum has been suspended for conduct detrimental to the team, Cavaliers General Manager Chris Grant announced today. Bynum did not travel with the team to Boston last night for the team's game this afternoon at 1:00 p.m. vs. the Celtics and has been excused from all team activities indefinitely. His status will be updated as appropriate.
It's seems likely this has at least as much, if not more so, to do with finances as it does Bynum's "desire." If Bynum is waived by January 7, only $6 million of his two-year $25 million deal is guaranteed.