Err, there is clearly visable in the picture a pole running across the top of the flag holding it out (pictures an eastern european flapping the flag about :Jester. Or are you talking about the creases in the fabric of the flag?
I tend to think they faked the pics. The evidence about how hard it would have been to take such great photos with a Camera fixed to the front of their suits seems to point to that.
But wether they really went to the moon? I think they did.