Yea the bug happened repeatedly, so I told him to also try to use it to manipulate the janitor's movement, which surprisingly worked, but it fixed the bug. I really hope this influences a speedrun because I love speedruns and I always wanted to help and influence new strategies in speedruns^^ If this is recreateable, then this is gonna be a real overpowered timesave.
Let's make it happen!
I don't know wether this is a new glitch and wether this is easily replicable or wether this isn't replicable or maybe even already used in runs - I think this could be a very interesting thing, as it would save ALOT of time whenever you change floors downwards. I made the clip as long as possible so the replication-process of the glitch is easier. I only found this glitch via the streamer that I'm watching.
The Clip: