I don't know, could Jason Killingsworth possibly be any more bitter about Christopher Guest shrugging him off? The interview didn't seem THAT bad. Shake it off, son! After a while I just stopped reading the between-interview comments. I think Killingsworth is a FWD!
*one thing I would add, though, is that for someone making a movie about the machinations of the entertainment industry, you'd think Guest might want to, you know, participate and keep up-to-date with the machinations of the entertainment industry.