You never know. God forbid Russ goes down but Denver won it all with a starter who turned it over more than any other despite missing a good portion of the season with injury. He couldn't drive the ball down the field or complete a deep out route. The backup hadn't ever started a game and didn't exactly light the league on fire when he got his chance.
Seattle has the same formula as Denver, stifling defense, a hard nosed run game and excellent special teams units, Add in top flight coaching I'm not going to turn off the tube in despair if Russ gets dinged up.
He's so slick though, so intelligent and well conditioned I don't see it happening. Might as well bring back Clipboard Jesus