ROFL, I just can't understand how you could pass out over a film. God knows how these people would react if they viewed some of the things on the internet these days.
Infact yes, it most probably is a PR stunt. I simply cannot believe anyone could pass out over a film. Unless you're some kind of weird human experimental subject that hasn't been exposed to any form of violence or gore for your entire existence, then you suddenly get ushered into a cinema to watch Saw III. Perhaps it's possible in that case, otherwise I don't think so.