It is really simple. With a win over AF, Chambers plays the rest of the season. With a loss to AF, Chambers sits and redshirts. This is the only plausible way to proceed for the coaching staff.
What some really need to keep in mind is that even if Chambers redshirt is burned, he is still saving something of value. That is, the redshirt can be used in any season in which a player appears in 4 games or less. Given Chambers style of play, it is possible if not very likely that Chambers gets injured and is forced to miss time at some point during his career at UW. Hopefully not but that is the reality.