The Mind Screw ending comes about because Pat Conley was Not Quite Deader Than Dead after Jory ate her. When Chip fights Jory, Jory is weakened enough that Pat's soul regains its powers and, understandably unhappy with the turn events have taken, rewrites history so she never died. The potential for far-reaching changes was established during her interview, in which she temporarily rewrote the preceding year (in direct contradiction to her later claims that her power was relatively limited. If Jory is to be believed, she thought she was in charge.) This requires that psychic powers can affect the living world from half-life, which is established early on when Jory appears to one of the psychics in a dream. To recap: after the assassination attempt on the moon, everybody but Glen Runciter w