Well, the Minnesota Vikings have made a change and have made Chrisitan Ponder their starting quarterback. His performance in relief of Donovan McNabb didn't inspire a ton of confidence, so it's just a move for the future. Ponder's performance didn't allow any leeway in power rankings, however, and they were actually made before the news came out that he'd be starting.
CBS Sports keeps the Vikings at 27:
27. If Christian Ponder isn't starting, the Vikings are making a big mistake. Their season is done, so get on with it.
As is their modus operandi, they're being more than a little hard on the team, but again, that's their prerogative. It's also not an incorrect message per se, it's just always too soon to say "done" when it's not halfway through the season. Ponder is, in fact, going to start and will be hoping to show the Vikings he can be their future.