I suspect he is angry because someone dared to point out the fact that some aspects of the opening ceremonies were faked in the interest of making everything over the top in an asthetic sense.
And this may also be a little off topic here but....
I will now have to play Devil's advocate by also pointing out the story that broke recently about He Kexin, the Chinese gold medalist in gymnastics, who is about to be stripped of her medals because of a Chinese government cover up of almost insurmountable evidence that she is in fact almost 2 years under age by IOC standards to compete in this year's competition. This was apparently done for the simple reason that she is better than the athletes who are currently of the regulation age.
Having lived there for 5 years, I know just how typical this type of behavior is on their part. It's all about something they like to call 'saving face'. I often wondered about this since it would seem that the truth would be more likely to achieve this