Two thoughts on this episode,

1) I know O2 is required for combustion, but if tried to have a return mission from titan could it burn up? If we used rockets to launch back up. Maybe thats what happened to the moon Iapetus with all the black spots. Maybe that is just soot from the Combustion of the atmosphere after some sort of impact with something that did contain O2. And the ridge of mountains formed from the heat melting the rock allowing the equatorial ridge to form because of the centripetal forces over time.

2) Could we somehow drop a hose into a moon that has hydrocarbons and use it as fuel stop to extrasolar missions?