Jayson Terdiman didn’t make it to the Beijing Olympics. His sled did. A week ago, Terdiman’s hopes of making what would have been his third and final U.S. Olympic team in doubles luge ended in an instant; a crash during a World Cup qualifying race in Sigulda, Latvia ended any chance he and Chris Mazdzer had of making the Beijing Games. The spot they sought wound up getting won by . . .