The previous episode is really confusing because Red John does have a fear of heights but McAllister at first appeared as though he is afraid of heights but then rescues Jane on the church rooftop but RJ also has a fear of pigeons which mcallister is obviously displeased with. I dont believe McAllister is RJ but that he is friends with RJ and Red john told sheriff to act as though he is afraid of both those things because RJ is aware of dr miller's tape and is using it to mislead Jane