As angry as I am about Howard going to LA, Orlando's return in this deal is the most shocking part of this deal.
If I were Rob Hennigan, as soon as I got the job I'd have called up Denver's GM and asked him how he got the return for Carmelo that he did. Felton, Chandler, Gallo, Mozgov, and picks for Melo and Billups? That's a steal. Denver is arguably better than New York right now.
Then again, New York's front office isn't as smart as LA's.