He seems to have gone down the fundamentalist rabbit hole. Funny that he thinks he was mauled by a demon. It makes total sense, in the religious worldview that he's espousing, that a demon would be attracted to someone with such a rotten soul. He's an evil man, so
of course
an evil spirit would stick to him -- just like flies buzzing around a dung heap. But he doesn't even realize what he's implying about himself with this demon story.
The owls are not what they seem.