Both Shane & Otis Could've Made It Back

Rewatching the show for the first time since I was a teenager. Shane and Otis could've both made it back from the high school. They just laid there on the ground and let the horde catch back up to them. Sure Shane's ankle was busted from the fall and Otis was exhausted plus had a bum foot/ankle after jumping from the bleachers but holy shit get up and keep moving.... the truck is RIGHT THERE.