New footage of the savage assault on a disabled woman in a Manhattan subway station captures the hulking brute claiming he was trying to help the victim “with your f–king walker” during the beating. The lengthy cellphone video – taken by a transit worker and obtained by The Post Wednesday – allegedly shows Norton Blake, 43, beating 60-year-old Laurell Reynolds with a cane, a belt and then his fists inside the West 116 Street and Lenox Avenue subway station early Friday. After he’s done hitting, smacking, punching and kicking the defenseless woman, the suspect yells at his cowering victim that...