Hunt often provoked the guys he was interrogating - he'd done a fair bit of that back in Bulgaria. Usually they caved, or they'd lash out.
But he'd forgotten that Bletchley still had his wand, and he was surprised when he felt the stunner hit. It took a few moments to get his wits about him, and he looked up at Bones. She had an angry look on her face as she muttered about playing games. "'M charging 'im," he said before feeling groggy.