Of senior Justin DePietro’s five touchdowns in Carey’s Nassau Conference II football season-opening 34-26 comeback victory Thursday afternoon, the most impressive came on a snap by Long Beach’s offense. On second-and-10 from their own 38-yard line, the Marines botched a snap that became an adventure. After two mishandled scoop attempts and several inadvertent kicks, a hard-charging DePietro pounced on the ball in the end zone to tie the game at …