doubleofive said:
Erik actually archived the answer:
http://www.erikstormtrooper.com/adywan-anh/mos_eisley_mixdown_layers.zip
It's a PSD (photoshop) file of all of the layers he had to use in ONE FRAME of "rontoscoping" the butt out.
Wow, did he actually do it like that, frame by frame in photoshop, and not end up in an asylum? That is incredible!!!