I'm sure this is old,
and old, is old.
I bet like 1,000+ people have found this
But I found this myself about 2 months ago and decided to share it today
Instructions:
1) Open the Doors on Rattlesnake
2) Now close it, and run towards the wall of any door
---Make sure you're lined up with the door.
3) Wait for the opposite door (Not the one you're under) to close
4) Once the opposite door is down, you can move away from the door that you're under
5) Without hesitation, open the doors once more
6) The door you were under should now be going down, whilst the one you weren't under would be going up.
7) Freak noobs out, scare choobs, make pro's ask you how you did that, etc; !