We actually put a little Easter egg in there for doing just that, waiting in the starting room for the full 9 minute run to be over. It is intentional and it doesn't really count as a win, since the score is terrible and most stats are very low. The moment you make it out of the choke point at the top of the room, the water begins rising, it doesn't start immediately so that people have a chance to mess around and get comfortable with the controls in a safe environment first.