Will Williamson be active?

Given his precipitous fall, it wouldn't be out of the question for WR Troy Williamson to be inactive Sunday. There are several reasons this is possible.
If the conditions are going to be sloppy, you think the Vikings are going to have a lot of confidence that Williamson can haul in those deep passes? While you're thinking, just think of all the ones he dropped in the Metrodome.
In addition, the Vikings may be forced to limit their throws, if the winds are strong Sunday. Brad Johnson doesn't have the strongest arm, and a run-oriented game plan may be the best best for the Vikings.
Also, given the injuries, the Vikings may need the numbers. DT Pat Williams and TE Jermaine Wiggins have bum knees, and the offensive line is hobbled. Could new Viking Naufahu Tahi make his debut, providing some juice on special teams and giving them a natural fullback?
Or, given the recent struggles of the coverage units, perhaps the Vikings may want an extra spot for one of the better special teams players?
Just food for thought.
In other news, Vikings coach Brad Childress said Williams has been upgraded to questionable and RB Chester Taylor (wrist) and G Steve Hutchinson were upgraded to probable.