I can't remember because its been a while since I saw the movie, but they didn't dump objects right? they propelled themselves with an explosion of some kind.

What program was this made in?

Actually ejecting mass would have an effect… not because the ship would become lighter (a concept that doesn't make much sense in space) but because you would be able to “push off” of the mass you ejected. That's how rockets work in space! Yay science!!

the extreme use of lens flares really gives it that authentic 'futuristic' look

I find your lack of lens flare disturbing

the lens flares totally pissed me off too