I didn't care much for the alternate ending either(all the really did was just take Jim out of the camera shots with them in the field-it was too easy)... I downloaded the movie months ago onto my comp.. then rented it last week because of the alternate ending... meh.
I did like the idea of the non-military storyboard ending that came on the dvd...
I did like the movie, but I saw the military's alterior motives for the women way before they ever actually happened.