From the videos I have seen, it appears we can clip into certain objects (ie the safe) and are able to grab the exit key this way.

If there is demand for glitches/glitchless category split, this can be catered for, but for now, all runs, (excluding Yangire%) will require you to open the safe and collect the key normally.

Yangire is excluded as the key is on Saiko, and can be collected by stealing it from her right by the exit door.

I know you left a mod note on my yangire glitchless run but I just wanted to double check whether or not future runs using that trick are allowed.

I would say only if the same situation arises where you've got the right key and used the right key but the door isn't opening, because you're still losing time to someone who's game doesn't bug out right at the end. Preferably would like to try try and keep it "glitchless" though, but it seemed unfair to reject the run despite you doing everything else correctly.

Ok I was just asking because I didn't even know that was considered a glitch. She only opens the door if you have the exit key, so I thought that was an intended way of completing the game.