...that the "bail out" point is subjective, the point where you're asking the audience to accept too much. But there are two other problems with the theory we're entertaining here:
First, you the visitor are actually told (via a question, granted) that what you are seeing might be supernatural activity OR your imagination, so your nervous response to seeing the warping of the building and the transforming of artworks is acknowledged and addressed precisely when that stuff starts happening. Seems only fair, doesn't it? Subjectively speaking, I would say it's too much to expect anyone to say, "Hey, maybe this sort of thing was happening outside, back there, and maybe all that stuff is actually normal-looking when the ghosts aren't screwing around with it."
Second, the distortions and alterations wobble back and forth with the normal. The busts stop moving when you stop moving. The paintings flicker and return to normal. Doors bulge and then pull back. You could say that the stretchroom remains stretched, etc., but that's just OSHA and the lawyers at work again, messing things up. Originally, the stretchrooms remained dark as you exited (so you couldn't see what was up there). For the queue stuff to be recognized as exactly the same phenomenon, it would have to flash to normal somehow.
By the way, that's also what you get with the Leota tombstone. Weird, normal, weird, normal. Why is that one allowed outside, anyway? Well, Leota is the only ghost having no problems getting around, isn't she? She's the one that helps the others cross over. Previous Imagineers followed the "rules" pretty well.