SANTA CLARA, Calif. -- Ryan Seymour was on the Candlestick Park sidelines on Sunday.He walked back to the Seattle Seahawks' locker room; he never thought he'd be back for the Candlestick Park finale Dec. 23 when the 49ers host Atlanta."Crazy business," Seymour said from the 49ers' locker room Thursday.As a member of the Seattle practice squad, the guard accompanied the team to San Francisco last weekend. Sunday, after the 49ers' 19-17 victory, Seymour flew back to Seattle after the game.