I just tested it on build 4790. using the mouse as the wii mote to aim produces a shot in the opposite direction than where I'm pointing. This only happens when using the bloom hack. If I dissable it than frame rates go down dramatically and the controls and rendering match perfectly.
Core i7 920
windows 7 x64
ati 4670
frame rate 50+
Core i7 920
windows 7 x64
ati 4670
frame rate 50+