Nope, sorry, Ron. Besides the fact that the Broncos offensive line was out-played especially and consequently not allowing Manning the time he needed to find and connect with his receivers(the Broncos' primary strength), Seattle out-hit and out-tackled the Broncos throughout the game on both sides of the line-of-scrimmage.
(...and thus, the Seahawks actually WON the game outright, and so it wasn't so much the idea that "for just a few mistakes here and there the Broncos gave the game away and lost it")