In Seattle, "Beast Mode" is an attitude.The Seahawks offense prefers to batter opponents with Marshawn Lynch, giving him the ball early and often. When he gets rumbling, the 5-foot-11, 215-pound former Cal star can carry the Seahawks to wins while running over defenders in the process. Lynch rushed for 1,257 yards this season, 1,590 last year and 1,204 in 2011. Over that span he's run for 35 touchdowns.When Lynch is in "Beast Mode," the Seahawks generally win. In five playoff games with Lynch, Seattle is 3-0 when he runs for 100 or more yards. The Seahawks are 0-2 when he doesn't.So, when the 49ers defense lines up against the Seahawks Sunday in the NFC Championship Game at CenturyLink Field, its primary task is to stop Lynch. Or at least contain the damage he does."You have to take him away," 49ers safety Donte Whitner told Ashley Fox of ESPN.com this week. "Like he said, he doesn't run to get tackled. He's one of the best backs in the National Football League, very rough style. We have to take him away and make the quarterback beat us."(It's) very difficult. Everybody's been trying to do that all year, and they haven't been able to do it. But if we want to go where we want to...