I figured out a way to go out of bounds using the zombies to hit you https://streamable.com/ibb08

The better question is where can we potentially use this?

I cant find many places where falling like that oob helps other than there which lets you get past a c4 door early which drops you right next to the run upgrade

Its still probably slower than just going there the normal way because you can fall through a lot of the rooms on the way there normally and to back track to there is weird.