I'm replying to Richard and Tweet at the same time- Deciding whether to toss the Meds or the Girl IS the moral conflict. Do you kill the flesh-and-blood person standing in front of you who's pleading for their life, if it would save the lives of a dozen colonists?
And Tweet may have been responding to the EWR posts without having seen the movie, because that was their first response. They ripped off every piece of extra insulation, wiring, a urinal, etc, and were disassembling their 1-man ship and blowing it out the hatch, but they were still short of their goal by 30 lbs. By the time they decided to toss the medicine it was too late. If they had tossed the medicine at the beginning they would have been okay, but they spent 2 hours of movie-time trying to solve the problem, while the weight of two people plus the medicine consumed all their fuel. By the time they ditched the medicine they were still too late, and still short on fuel.
If anyone reading doesn't want to know the ending to this movie, then avert your eyes and click BACK. The cold equation was that they ditched the medicine too late to help their ship. Then the girl voluntarily went out the hatch so that the pilot could live. The pilot successfully landed where he was tried and convicted for the deaths of 18 colonists.
THAT's a story of moral crisis, isn't it?