Good episode... That was kinda sad, but at the same time it was like putting someone out of their misery. He wasn't cut out for the new world. Being a moral person doesn't mean you have to put you and your group at risk. Randall's full-on creepy, and should've been killed.
Hell, let Carl do it, he needs practice... bad.
BTW again, and I hate to be a hardass, but wasting a bullet on the execution? Why? More humane? You're eliminating a threat... Darryl and Shane needed to handle that with Rick minding where his son is at. Also someone needs to set a "travel in pairs" rule. I mean, there's some seriously common sense stuff not happening and it's frustrating.
Good episode. Love the show, and I still say this is the best thing on TV today, and the best thing I've seen in ages.