The Falcons still have Tennessee, Tampa Bay, and Carolina on the road as well as New Orleans. Houston can also still run the ball and they still have one of the best defenses in the league.
I don't know what your expectations for the Saints are, but I don't think we'll lose more than twice down the stretch.
We have a one game lead on ATL right now if they win Sunday. Even if we somehow manage to drop behind the Falcons, we're still in good shape as long as we're within a game of them going into 12/26.
I don't think the Saints will lose more than two more games this year and I do not think ATL, or any team for that matter, can beat us in primetime at the Superdome.