This reminds me of a simillar issue on Neverwinter Nights some time ago...
My best friend's mom was playing, and this guy comes along. They're talking, and then the guy asks where she lives. Well, she tells him her NWN house adress. He gets mad, asks for her real adress, she tells him no, he pwns her character, Kalindra. Then, he does the same thing to this other girl, and this whole huge ordeal starts.
So he goes on a rampage across th city of Hillfar, where my best friend and and Kalindra have their player houses. We're playing around, and then we see him, and we run to Wendy Fallfeld's (My best freind's character) player house, he's on our tails, we hide and we don't close the door.
The door, when closed, locks and only opens if you have a key.
The door was still open, he comes in and kills us, and soon after Loki (The Dungeon Master) puts his character in jail, and he couldn't get out. A few days after he was banned.
I know that isn't exactly like the current issue, but it's similar.