No, you can get banned or monkeyed for IRC misdemeanors if those spill over onto the board proper. In this particular case, dANGER_boy is not banned from HLP, because he didn't make a post about him breaking the DRM on some DLC. However, always assume that the same rules that apply to HLP also apply to #hard-light, especially when the less forgiving chops are around.
As far as I know, noone has yet been banned for appearing in some chatlog, even if they broke the board rules in the process. Whether or not they were allowed to remain on #hard-light after they made those statements is a different question.
So. Policy at the moment is to deal with people making trouble on IRC on IRC. However, once that spills over to the board, board rules apply, and the prior history on IRC may play a role in determining the level of punishment.