... by wrestling the party leader to the ground.

http://www.youtube.com/watch?v=rL1imVGHMFM

So, that's obviously not supposed to happen.

Short version: I sign on and my friend invites me to come look at the glitched out wolvers. I port down and he's stuck exactly where you see him with the wolvers popping up and around him continually attacking, while he sits there blinking and not dying.

I watch and laugh a little, then pull out my snarby blade and take a swipe at them, at which point they glitch me out as well, freezing me in place and attacking both of us continually.

I return to haven and rejoin, and explore the level a bit. I managed to kill a mender near by and pop some prize boxes, and then after waiting around maybe 15 minutes for a GM to show up (never showed up, probably a busy night), the whole map sorta froze, and turned into basically what you see in the video.