This isn't directed at you specifically, but I'm still waiting for some evidence that they would definitely have had the surgery in July. It seems like a rather large assumption. I'm not even sure how one would assume that Manu would have stayed in San Antonio just because it was the offseason.
Since San Antonio isn't the only city in the world with an MRI machine, I'm not sure how there's any excuse for not doing it whenever they wanted. What's Manu going to do, refuse to have one? If everyone knew he was potentially going to need surgery then the Spurs could have sent someone to take Manu to the doctor. It wouldn't have mattered if he was in Hawaii, Buenos Aires or Beijing. If they'd set a timetable to check his ankle a second time, they could have done it. It seems they didn't. I fail to see how that's on Manu.
It would have made the situation a lot simpler if the Spurs had said, "Of course you can go to the Olympics, but we want another MRI on X date, and if there's no improvement then you need to have surgery by Y date."