It seems like the final release version wasn't even tested. (metacritic.com)
There is the final release version, which we all know and love and then there is the preview version which runs about two minutes longer and features some alternate takes. (mediamikes.com)
The montage's a nice bonus for an already loaded DVD, and its omission from the final release version is accompanied by an amusing explanation via an optional commentary. (kqek.com)