Clearly a case of team orders - Raikonnen did not look happy the moment he crossed the line - sped round on his inlap, looked fed up before going onto the podium, looked fed up on the podium, did not step off the podium during the champagne, played with his fingernails during the post-race interview. Obviously he had to be careful what to say, but the fact that he was putting in fast laps once Massa had passed him smacks very strongly of a racer being ordered to give way.
There is no way that a car can be strong for 50 laps and then conveniently encounter a "problem" for a lap as your teammate passes you.
I have to say, unless Hamilton can split the Ferraris at Interlagos, the title is Massa's for the taking - he will dominate there.