Wise man once said, "When you have to shoot, then shoot don't talk."
- Tuco in G, B & U
Premise: You only have some many changes to action, before the tables turn
Exactly the reason why Rick should have put the kid out of his misery when his leg was impailed on the iron bar. Shoot him and run to save his own life.
I would have just left him there with the Walkers.
Probably not the best either. Information is power and Randall has it. They won't have known the morals per se of the other group nor would they know their numbers!