If I move/slide a machine and don't tilt, that is the new position of that machine.
If the game next to it is too close at that point, we can wait for that game to finish if my opponent wants. (Games are too close for serious comp. play if that happens, imo)
If I move the game and tilt, I will usually place the game back to its original position, if I think it is possible without tilting through to the other player.