Don't blame him for wanting to play for a contender. He has a far greater chance of winning a title (and getting significant minutes) in Miami.
Boston tried shopping him multiple times and thought they had him traded at the deadline for OJ Mayo. Apparently he doesn't get along with Rondo. Oh well.
Good luck, Ray. Beat the Thunder. (Btw, my friends in Seattle are thrilled that Ray is playing for the good guys)