Resistance Fall of Man - Wallbreaking tutorial

I'm not the greatest at explaining things but this is a quick tutorial on how to clip into most walls in the game (provided it's a corner). You can also do this on flat walls, as far as I remember, but I haven't been able to get that to work.
1) Find a corner where you don't start shaking (it might be possible on these but you usually just get pushed back out).
2) Face the wall you DON'T want to go through
3) Angle yourself very slightly towards the wall you DO want to go through
4) Move the analog stick a tiny amount towards the wall you're facing and wiggle it around until you find the point where you start sliding sideways
5) Sit and question your life choices until you eventually clip through
Enjoy