Oh, found a bug today too. On my way out of the fridge area of the course, I decided to quickly duck back out of the chamber-lock. I was then trapped in the previous room. Was able to do the same with most of those types of rooms, with the exception of the one before the toxin test. The middle door in that chamber-lock prevented such haxxors.
"Oh my word! A Xen tentacle is eating my leg, shoot! Poppycock!"
"Holy fucking shit I'm being eaten by a motherfucking Xen tentacle! FUCK!"