On that scene you're not supposed to be able to move backward, it purposely blocks you after the "scare" in that room, you have to keep moving left. Or at least I think that's what you were having an issue with?
Okay, I managed to play it all!
For some reason, it had teleported me into the walls at the bottom of that scene, and I was stuck in the wall.
I really enjoyed the game; I do the exact same thing, watching horror games when I know damn well I'm gonna suffer. I've taken to watching most of them on Youtube if I know it's gonna be Too Much. At least I;m not 100% alone then.