Why remove the trailer scenes?

[plutomaniac]

I think jens is talking about

Spoiler below!

the cage area near the centrifuge, where you have to mix the two components.

When I played this part the pig cornered me and killed me. The funny thing is that when I continued and closed the door behind me (the one which disappears right after) something hit the door. Basically even if the chase scene fails, the door smashing is not removed. Just a small fun bug that I was not expecting and scared me!