Why are Christians so uneasy about the paranormal

[GrandizerII]

Regardless, the sleep paralysis + hallucinations explanation is compatible with the description you provided. In fact, it was the first thing that popped to my mind as I was reading your post. I was looking for anything in the post that would falsify the explanation but found none.

This once happened to me as well, and this is almost identical to what happened to me (the "half-awake, half-asleep" part).

I'm not sure how, considering sleep paralysis is described as inability to move, which is not what he experienced. Saying he imagined the presence in the room and imagined the dark figure on the mirror sounds much more plausible to me than saying he had sleep paralysis when he had gotten out of bed, gotten a drink, and splashed cold water on his face.

Fair call about the sleep paralysis part not being the case. But whatever the exact sleep experience was (terror episode), I interpreted that to mean he got out of bed after the experience.