There's definitely more to Gabe than meets the eye. Nobody as timid as he claims to be just wanders around in the hot zone like that.
And who DIDN'T see that attack coming at the end? As soon as she let him step behind her, I knew it. She trusted him because his name was Bob, and look what it could have cost her.
I think it was crazy stupid not to go with Rick's plan. In the new world, there's no such thing as diplomacy anymore. They should have gone in, kicked butt and gotten their people back. Then maybe they could live in the Hospital. If Dawn's group can keep walkers out, so can our group.