Right. Dark Heresy campaign over IRC. Cleric, Tech-Priest, assassin, guardswoman, psyker.

That last one is the problem.

Feudal world, psykers going nuts, cultists coming out of the woodwork, yadda yadda yadda. Our own resident psyker isn't helping. You see, he's an asshole. He thinks being able to cast Inflict Pain means he can blow up people's minds with a touch. And he's got a habit of referring to the female PCs as bitch - assassin bitch, machine bitch, whatever.

Then he moved up to 'whore' and called the Cleric a Slaaneshi cultist. This leads directly to a standoff, with the Assassin (who was up a tree, scouting the area) with a long-las aimed at his face, the Tech-Priest levelling a las pistol at him, and the guardswoman with her sword half-drawn. The Cleric's half-heartedly preaching cooperation, but he's not far from decking him either. We're ICly giving him every chance to apologise, the GM's telling him repeatedly to just apologise and turn down the dickishness from a 9 to about a 5, and what does the psyker do?

Ragequits.

After about five solid minutes of facepalming, we decide that we knocked him out and left him in the ork-infested jungle. We continue with our adventure for a bit longer, when suddenly...

Bam. Server admin up in this shit, times two. Apparently the psyker had told the owner that we were planning on hacking the IRC server or something.

Any other online tabletop horror stories?