nigel, that has totally sorted it. that user has been so forcibly removed from the room he's scared of ever coming back again. RESULT !thanks mate 

hey guysapologies for all the questions, hope you don't mind (can you tell i'm english? ) really appreciate the help!anyway: scenario:1. dave opens a session2. dave invites bill3. bill comes in4. bill is drunk & abusive so dave runs his goddam @$$ outta the room UserManager.removeUser(billsUserID);...