If they take out Alien, there won't be any references to science fiction at all in the GMR, that's asinine. Many of Hollywood's biggest and most popular blockbusters have been science fiction films. Years ago there was talk of a Star Wars scene, if they have to replace Alien, i'd rather have that. PotC is a completely nonsensical choice, for one thing, its only a few years old as a movie, and of course there's the obvious reason.
Take anything you hear from random CM's with a grain of salt. They don't know anything more than we do, sometimes less if they don't keep up with discussion forums and rumor sites. I think we should all put this one in the "not gonna happen" pile.