Similar issue, I had Astarian get pushed out of the bounds of the underdark and turn up as a corpse in camp. Unlike you, I don't have any other character's hanging out in the campsite currently so I have no one to resurrect him with. The rest of my party is alive and together, but when I try to return to camp I get a message saying a member of my party is unable to travel to camp (presumably Astarian). I don't know which part of this is the actual bug, characters pushed out of bounds going to camp or not being able to travel to camp, but unless I'm missing something there's definitely a problem somewhere here.
