Split second thinking, that's what Harold needed! Only he didn't have it. He wasn't expecting anyone to notice him, and he certainly wasn't expecting someone to manage to grab him. Truth be told, he'd gotten away with pick-pocketing so long he'd forgotten all his escape tricks and back up plans. Rusty. He was rusty! How had he let himself get rusty!?
His first instinct was to apparate, but with Cormac's fingers firmly wrapped around his wrist that plan wasn't going to cut it. Hex to distract him? He had an old smoke bomb in his pocket, but unless he could wriggle out of Cormac's grasp it wouldn't do him much good.
With plan A out of the window, Harold went with plan On-the-Spot instead. "Hey man! I only bumped into you," He declared, twisting his wrist, dropping Cormac's wallet at the same time and hoping he hadn't noticed it, "I wasn't doing anything pervy, ya weirdo!"