To the best of my knowledge, Brad kept on shooting the Snob movie. THEN AGAIN the only people I actually heard about going to shoot were Diamanda Hagan (rumor has it was just with Omega during that time and not actually in Year 4), That Sci-Fi Guy (possibly also only at a Con but if so EXTREMELY coincidental timing; also EXTREMELY awesome if he was in it, same with Hagan) and Obscurus Lupa. Actually, Apollo Z Hack was busy the same week this was filmed so it might just be an elaborate scheme among popular reviewers to keep everyone in the dark as to who was actually in it.
EDIT: Apparently in the other thread, Brad confirmed appearing.