why's sado banned? what happened?

I noticed that sometimes you bounce off the doorframe if you go around it, and if you trimp, you get launched absurdly fast upwards, usually hitting the overhang.

I have a clip of me skipping a locked door room with it, as somehow, I managed to skip over the overhang. is it possible to apply this in a speedrun? can a guide on it be made, as to get consistent at it?