Why are the Broncos getting rid of Tebow? Because they signed Peyton Manning, and he’s the only (available) quarterback that could have displaced Tebow, and Elway et al. feel they can win the Super Bowl soon with Manning, probably not with Tebow.
Why did they not keep Tebow as the backup now and the starter in the future? Because it wouldn’t have worked. Tebow wouldn’t get the necessary work in practices or games to help his development as a passer.
Why didn’t the Broncos move him to another position or use him as a Wildcat? Because Tebow has been told his whole life he couldn’t be a quarterback, and he is determined to be a long-term starting quarterback in pro football. He wouldn’t move.
Why did John Elway say Tebow would be the starter in training camp if he didn’t mean it? Because Elway didn’t realize then there would be a chance at Manning. The sincere intention by the Broncos was to play Tebow next season.
Why did the Broncos think Tebow couldn’t become a great passer? Because of his flawed throwing mechanics and footwork.
Got to hand it to Woody. He's taking the trade with a measured sense of perspective.