I voted bad move for exactly the same reason. We aRe in the 6th WC spot with a full game lead on the rest of the pack with 7 games to go.. Now is not the time to see what a rookie can do. It's time to go all in.
Now Coach McDermott says this not an experiment. Says it gives a better chance to win. I'm taking him at his word. If the offense is more productive and the wins continue to roll on, good move. If not, bad move.
As far as other teams that have gotten in at 9-7, there's the SB XL winning Stealers in 2004 and the 9-7 Giants in 2008.
My real concern in all this is the defense. Hopefully Nasty Nate is a better tackler than Hotrod was.