FWIW I think Childress blew the game. I was confused at the time, and still am somewhat confused by the play calling during Minnesota's last possession. Minn was set up with a 50+ yard FG at the time and Childress calls up to ultra conservative running plays. That is fine if you have a 40 yard FG or 35 yd FG, but not a 50 yarder. Then when Minn has 12 men in the huddle your moved back to a 55+ yard FG where you need to pass the ball. Favre knew he needed to make a play and unfortunately for Minn he threw an int.
As for OT the only change I would make is guarantee the opposite team gets a possession. If both teams touch the ball in OT I have no problem with that.