I have no idea. Could have been a number of things. Maybe the kill-through-protection was a one-time thing only to keep him from being overpowered. Maybe Earthling was an imperfect doctor to begin with, or became imperfect over time, maybe ALL doctors are imperfect.

Maybe it's a combination of that and the mafia thinking they'd be able to frame me successfully, what with the cult also out for my head during the past three or four lynch votes.