Yeah whatever
What happened to Stuart and karl if at all real has probably nothing to do with the paranormal. You should put yourself in a straight jacket, in a pitch black padded cell, in a haunted asylum, it's going to mess with your head. Waht's the point in even doing it? It's not going to encourage activity but just make yourselves act all melodramatic making it look like something spooky's happening. In fact I think I just answered my own question.
Do some proper investigating like the Ghost Hunters!
Did it remind anyone else of the Blair Witch project with Stuart just facing the wall in that room? :P