While doing this mission today I was teleported under the world. I wasn't sent to jail, but I was put under the world. I can't quite remember where I was standing prior to the shadowstep (I didn't anticipate being sent under the world), so there's some magic place where it's possible to stand and end up under the world. It'd be handy to have a Z-axiz check to prevent that since I wasn't able to help my group afterwards.
