Hard tellin...those are the only two I've gotten. I did notice that the pilot can still be dead after saving the jacker if you don't ask him about the computer, so I tried a few different random combos of things to talk about but did not find other endings. By no means did I try everything, so maybe I'm just missing it. Also, one thing does change based on earlier killings: If you let the xenophobe declare war on cthulhu, the description of the invasion will be different depending on whether you killed the farmer and the jacker