What about the first bit seemed unrealistic? I mean, besides the hand of God smacking the moon into bits. I loved the commitment to rock hard scifi, and the slow decay of relations on board resonated.
You know what, now that I think about it you're probably right. I think that the story just played into my feeling of a small team being able to carefully navigate where a large group takes on a mind of its own, and usually for ill. That's true in my experience for some things, but in space? With no backup? Probably doesn't carry over.