Manning gave futile chase, but was blocked by a New Orleans defender and fell awkwardly as the cornerback raced by. The four-time NFL MVP forlornly walked to the sideline as the Big Easy celebrations began. Who would have thought the biggest mistake of the game would have come from Manning?"It's time for the Saints to celebrate," he said. "It's their field and it's their championship."An NFL embarrassment for much of their 43 years, the Saints' football renaissance, led by Brees and coach Sean Payton, climaxed with Shockey's touchdown and Lance Moore's 2-point conversion catch The conversion pass originally was ruled incomplete, but Payton challenged the call and won.