Seems Jason La Canfora was just as surprised as the rest of us not to see Springs; also he seems to believe springs is healthy:
"And all the while I can't help but be baffled by Spring's standing on the sidelines.
Gregg Williams says he wants to keep the guys fresh and rotate and all of that jazz, but ain't no way I don't have Springs out there. Heard that after the game Trent Green was asked some of the Skins players what was up with that, 'cause the Dolphins went into the game hoping to pick on the guy not on Shawn's side, and ended up only facing Springs in the nickel package for the most part.
Springs is healthy, and I'd be playing him like heck now."
Redskins Insider
Could this just be GW looking at the younger guys and giving Springs rest against an easy opponent?
This is all very strange...