((Due to a lack of consensus, I just picked one, which ended up being diplomacy.))
147 hops into the fighter, powering up the guns and taking aim at the nest.
At your command, he hesitates before pressing the trigger so you can attempt to solve this diplomatically.
You psychically tell the spiders,
"You stop kill, or we destroy." Already terrified by the attack on their home and further intimidated by the flying metal monster pointing really big guns at it, they scream back,
"No die! No destroy! No kill us! We stop!" "Go to eggs. Wait, then we feed you."They scurry back to their nest, trying to cluster around the edges, away from where the really big guns are pointed. More spiders continue to climb out, until a total of about a score of them are standing on top of the limp, deflated bundle of broken eggs.
You call the science division, requesting food for predatory aliens be brought up to the docks. When the backup arrives, you take the tesla knives they brought with them, putting on your belt along with your sidearms. You stay ready until the food arrives and while the spiders are feeding, but they don't try to pull anything.
Well done, soldiers. You have the only experience dealing with these creatures, so we're leaving it up to your judgement what we should do about them now that they've surrendered.What should be done about the creatures? You could give them a self-propelling cargo container and send them back into deep space, attempt to scientifically investigate them (no dissecting even somewhat intelligent beings, though -- command is too worried about civilian backlash), try to train them as part of the crew, or anything else you can think of.