new to the forums here, and I searched it up and couldn't find anything, sooo... I cant seem to figure out how to do this pose Bungie.net : Halo 3 File Details
I'm not completely sure either, but I have seen that pose when a sniper died on the lift in avalanche middle area.
well if you look at the comments on the picture you linked to, it says that he was beating down the air. Simply capture the right moment and well-ah.
yea I read that and tried it, I just cant figure out if there is a certain timing to it or a combination of actions, cause even if I move it in theater mode as slow as possible I can't catch that pose during a regular beatdown or shooting then a beatdown =/