In a scene reminiscent of the closing seconds of the U.S. victory over the Russians in the 1980 Olympics, the rejoicing Delaware hockey team piled on top of each other moments after beating Navy, 6-5, Saturday afternoon. Delaware had just ended several years of frustration against the Midshipmen when Mike Crowe broke a 5-5 tie with 54 seconds left in the game. Delaware (14-4-1) had not beaten Navy at the Ice Arena in six years and had won only twice overall in five years. …