Just 1 yard from the end zone, a win for the St. Louis Rams slipped through Gus Frerotte’s fingers. The backup quarterback fumbled the snap on fourth-and-goal from the Seattle 1 with 27 seconds left Sunday, allowing the Seahawks to hold on for a 24-19 victory. Frerotte picked up the loose ball, but was tackled at the 5, ending a last-ditch scoring attempt and the Rams’ modest two-game winning streak…