Bob Mallamo tugged at sturdy metal door, bracing it with an iron rod as the metallic slam roared down the corridor. He stood back and eyed the door carefully, as if parting company with an old friend."Come Monday night after the game," Mallamo said, his voice shaking, "when I lock those doors it'll probably be the last time."Mallamo has locked these doors countless times over his 31 years as the San Francisco 49ers' locker room manager at Candlestick Park. It's his final ritual after each game is over, the reporter interviews finished and the players gone.On Monday night, the 49ers will play what's likely the final sporting event in the history of the 53-year old stadium. And then like the team, Mallamo will report for duty in Santa Clara."It's going to be hard to get up in the morning and not drive here," Mallamo said.As he drifted through the 49er's original locker room, the smaller one beyond the team's current locker room, he let the memories flood back. He could still see Joe Montana dressing out, Jerry Rice bounding across the room – Freddie Solomon lacing up his cleats."I come in here, I get goose bumps," Mallamo said. "All the memories and stuff here."He...