The Pittsburgh Steelers gave the Colts every opportunity to steal their playoff game Sunday. In the zany, final moments of a true thriller, Indy couldn't figure out how to take it. So the Steelers survived a goal-line fumble by Jerome Bettis and one of the most mysterious replay reversals in NFL history to shatter the Colts' dream season with a 21-18 win. Pittsburgh (13-5) became the first sixth seed to make a conference championship game and will journey to Denver next Sunday for a shot at the Super Bowl. They will do so breathlessly. This victory should have been so much easier. The Steelers dominated the Colts (14-3) until a fourth quarter with almost unimaginable twists and turns that ended when Mike Vanderjagt missed his first field goal at home, wide right from 46 yards. Vanderjagt then slammed his helmet to the turf, obviously forgetting how fortunate he was to have the chance.