http://speedendurance.com/2010/01/27/glen-mills-on-usain-bolt-and-good-sprinting-technique/
Good article. I can’t believe people haven’t put any discussion into it?.
It seems people are more interested in the articles associated with complete dis-info.
http://www.charliefrancis.com/community/showthread.php?p=210895#post210895
It’s sure a good sign powerlifters don’t do sprinting, damn guys would obliterate the WR. 
I think it has been covered here…