I wrote something about that too. I agree.
Closed Accounts are not removed from Groups & Team Matches
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May 11, 2010
0
#3
Another bug!!!
Look @ this game,
http://www.chess.com/echess/game.html?id=31359252
Player who was caught for cheating is on vacation 
That's outrageous!
Many accounts are closed for cheating. But these closed accounts are not removed from Group Members.
Also, if any player is registered for a team match & his account was closed before starting the match, he is not removed from the team when the team match starts.
For example,player S_M_Arsalan's account was closed for cheating before locking the teams for match : http://www.chess.com/groups/team_match.html?id=33536
Team admins did not remove him from the roster before locking the team. When the match started, he is not removed from the match.
Whenever an account is closed, the player should be removed the groups & the team matches which are still Open for registration