There was an early review of the movie that contained a spoiler of the ending. The ending that was originally used involved
Ben Affleck and
Samuel L. Jackson getting into a fist fight that leads onto the balcony. They talk about right and wrong and Affleck takes the file and tears it up and the movie fades to credits. This ending was most likely cut because test audiences did not like it. It will most likely appear on the DVD. Also a small clip shown in the TV ads shows Affleck and Jackson fighting on the balcony. This was part of the original ending which explains why it was cut.