I know it might seem redundant to bump my own (old) thread, but apparently there's a demo of BR2 on Steam released now (
http://www.steampowered.com/v/index.php?area=game&AppId=3850&), so instead of buying it blind, this would be a good test of whether the Steam version of the game can be modified to support widescreen in the method described in the previous post's link. Just in case anyone's curious.
EDIT: This is irritating. The demo is identical to the original demo, in that you take the folder it creates and dump it elsewhere away from Steam, it will work entirely without steam. The WS modification works, but there's still no way to determine if the final EXE of the full version was encrypted when modified to work with Steam. Oh well.