He demanded the cash from the register, and the cashier started giving it to him . . . until a 58-year-old customer named Cragg Jerri decided to step in. Apparently Cragg's a regular there, so he picked up a metal chair, SLAMMED Ryan in the back with it . . . and then started brawling with him. Eventually he wrestled the knife away. He wound up getting stabbed in the process, but he ALSO got a few nice stabs in on Ryan too.