He used 2 molds of the front of his body, one's a set of pant legs, the other of his torso. For the initial part where he's behind the curtan, he leans one way and turns the mold, to make it look like he waist points off to the side. When he's standing "next" to himself, he's crouching behind the two molds. Watch him shift position and pull closer when the camera swings by, he's not quite fast enough and for a split second you can make out him behind it (and apparently there's the shadows, but I missed that). Watch him when he walks, it's all retarded looking because his knees aren't there anymore to walk properly. All this trick takes is 2 body casts, some balance, and a fancy gimmick to explain why you've been cut in half
$do || ! $do ; try
try: command not found
Ye Olde Galactic Empire Mission Editor (X-wing, TIE, XvT/BoP, XWA)