When Gordie Lockbaum brought his talents to Division I-AA Holy Cross, his coaches decided to turn back the clock. In this 30 for 30 Short, produced and directed by Erin Leyden, Lockbaum and witnesses look back on the heady days when he might play in 143 of the Crusaders’ 170 plays, attracted national attention, and became a finalist for the Heisman Trophy — twice.