Episode 11 - S1-E11
Question: The aliens that capture Andor and the other escaped prisoner in the web gun at first are talking about turning them in for money or killing them. They talk about then poisoning the water with the prisons. Hard to understand them, and Andor begs them to be let go. Then suddenly, the two aliens are not only letting Andor and his friend go, but they let them take their ship. We're confused and don't understand why they suddenly helped Andor and let him take the ship.
Answer: I agree that the aliens' motivation is not clear, and this may all be a writer's shortcut to get Andor and Melshi on to the next part of the story. But I believe they are very disgruntled with the Empire, and I suspect they may be pretending to be more hostile than they really are, just to wind Andor and Melshi up. So - with no other evidence - I think they give up their ship because it messes with the Empire, it helps some mistreated prisoners escape, and the aliens have nothing better to do than walk back to their homes.