But don't just take my word for it, for those who can bear to watch a Jarrah White video, even he concludes that the astronaut was close enough to brush it with his arm....
http://www.youtube.com/watch?feature=player_detailpage&v=QI3fwzPGtUk#t=257s
Direct quote from Jarrah White
"Now, admittedly, I've been fairly conservative in measuring the bodywidth by only including the width up to his shoulders and it's possible his left elbow was jutting out making the body wider. If that were the case, his elbow could have brushed the bottom right corner of the flag."
----------------------------------------------------------------------------------------------------------------------
You only showed the first half of the quote to mislead people who don't take the time to watch the video. He goes on to say, "But this possibility hardly matters because, as we've seen already, the flag started moving well before he got near that corner."