Uncharted: Drake's Fortune - Skip blue room fight

Not sure why this works. You have to get the checkpoint by the guy I blow up. Then if you go back and clip into the room so the enemies don't spawn, climb to the exit and clip through the gate. Now just clip back through the gate and it will allow you to use the mechanism that raises the door. Now in the next room it will allow you to raise the water level. You don't have to hang off the ledge like I did before I opened the door. Enemies might start to spawn if you take too long. I don't know if this is much faster than just doing the fight, but I would be surprised if it's slower. So this makes 11 fewer people murdered by Nathan Drake?