His argument re: All Things is that they don't show Mulder and Scully falling asleep or waking up together - they show Scully asleep on the couch and Mulder asleep on the bed, so they were faking us out in the first part of the episode - nothing actually happened. Re: Existence, yeah, I think he's blocking that out.

He hasn't seen IWTB yet, and I'm not sure he ever will. If he does, I bet he'll just block it out too. Hey, no shame - it isn't part of my headcanon either...