Wait wait wait. You're saying that, even though Kate and Sawyer knew that the two Others would be released and would aid in the attempt to catch and kill them, that they should have just left the two guys alive? None of the other Others were doing anything to stop Crazy McKillyoulots from shooting Sawyer. Why should Sawyer let the Others kill him? The best way to avoid dying is to kill the guy who wants to kill you. He's too big and strong to hold as a hostage, too irrational to reason with in the immediate future; the guy wants to kill you, and if you lock him in a cage he'll just be out in a few minutes to come after you.
I hate the Others. If the Lostaways don't kill one of the Others in the next two episodes (or we get one hell of an explanation why not), I'm out.