Right that was because they got the best Spread Option QB to ever play the game.... The fear of Tebows legs allow a lot more room for Willis and ball to run. It also opens up passing lanes.
You allow your offense to always have 1 free man because the other team has to consider the QB as a player in need of a eye.
You watch, the Broncos will trade for a Terrelle Pryor sitting on the bench in the off season, so they have a player to run the Spread if Tebow should get injured .....
OR
They get beat by the Broncos for the division and now are changing thier offense to the Spread and Pryor will start in Oakland next year !!!!