i've spent some time trying to get OoB. I was throwing the ball around trying to find any place without invisible walls and the ball got stuck there. I tried to get OoB on Lab and got on top of the desk with the body on it but couldn't do much else

Yes, you can also get between the boxes, but the last line is impossible to pass. The thing is that in the machine room, there are two large islands of square colliders separated by a narrow hallway. There might be a way to force the collider on the second floor to end up on the other side of the hallway