That's because it exists. Poor quality versions of this deleted scene have been around on the net for quite a few years. Someone has put the scene up here: http://www.youtube.com/watch?v=54vIMGr1ho0 (if YouTube links aren't allowed, Mods please edit out).
The Generations scene, wasn't that on the DVD outtakes?
It's not on the 2004 Special Edition DVD I've got, but that only had four of many scenes. That YouTube link is the first time I've seen it, though oddly the poster claims to have seen it in the theatre too, to maybe there was a freak print that somehow got into a few cinemas. I can see why they cut it, as it's very grim compared with the rest of the movie.