The answer is brute force. They've taken everything from Daryl, all his tools, but none of his strength. Once he's done jiggling the handle, he takes a step back to study it, pausing to answer the other guy's question first.

"Yeah," he says. "Hate to be rude."

And then he lifts his leg, and forces the heel of his heavy boot down on the door handle with as much force as he can. There's a loud clang of metal, and he manages to scuff the surface of the door, but the handle stays stubbornly in place.