This makes sense. You had to think injury was the reason for such a drastic drop in his velocity at the end of the season. My guess is he will wait until he's healthy and then see if he has enough zip in his fastball to make it worth his time to come back.
He'll have to be fairly quick about it because by early March, Elway will have to make some very expensive decisions to either give this team another year to go all in, or tear it down and rebuild. It won't make a lot of sense to spend top dollar on the likes of Thomas and Thomas if you don't have a QB to get them the ball.
In one sense I respect that they kept it a secret until now. I hate what I call the McNair effect. If you remember Steve McNair was an excellent and very tough QB for the Titans when they were good, but I hated the constant whine about how he was always overcoming this injury or that one. In the meantime Brady suffered in silence, and it was only after the season that we found out he was playing with a broken rib, or bad hand or ankle. F the injury report. I'd never be honest about it when it came to my QB.