Actually BC2 dosn't have a console like prevosly BF games so nothing you can do about pb settings.
You can use the chat screen to edit the pb commands by using a "/" as a prefix. For example:
/pb_sleep 500
/pb_security 0
/pb_writecfg
I'm sprazcrumbler. I was playing on the Crash and Burn / popular maps / noobs server at about 10.35 gmt on the 8th of january. There was a level 50 player who was obviously twice as good as anyone else in the server. I asked him why he was playing in a noobs server twice and I was given warnings for avoiding the auto censor or something. I then told him I hate him and was permabanned for behavior.
The ban stays.