i somehow got out of bounds i pressed Move and turn at the same time
I figured it out. I was doing multiple inputs because i found you can cheat corners and go a little faster if you start the movement into a direction and then try to turn.
I got myself out of bounds and back in bounds by pressing back when there was space for me to move, and then pressing either turn so that i would rotate to a direction where i cant move backwards. since the backwards move already started, it just continues in the new direction.
UPDATE: Tried to use this to speedrun to the end and got stuck in the gem puzzle door. apparently there's an invisible wall just behind it that goes away when you finish it.