I broke it today... kinda badly. I was heading out to a mud hole. It's some trail, then MUD. I was just about to the mud when I started getting a bad, bad noise from the back right. A crunchy something is effed up noise. So I got out to look. The end of the torsen bar had rusted and broken off. The trailing arm was a little crooked, and the strut was rubbing the inside of the wheel well. So before something came loose and I broke more POOP I turned around to go home. The noises got worse. By the time I got home the strut had rubbed a hole into the trunk and the trailing arm is so close to coming loose I have no idea why it's still connected to the car.
So ya, this sucks. It's going to be hard/expensive to find a torsen bar, and a pain in the DONKEY to replace.
Last resort is to weld it, but it's so far gone it'll be hard to make it sturdy again.