World best vs. world record

Last month the IAAF declared that a woman's time only counts as a world record if its in a woman's only event. I don't get it, I don't understand their logic at all - especially since at many races the elite women start and race mostly separately from the elite women. These writers for the NYT clearly agree with me:

http://www.nytimes.com/2011/09/22/sports/for-womens-road-records-only-women-only-races-will-count.html

What's next, a world record only counts if there are no spectators? But then if a world record falls and no one is around to see it... If this is the way the sport is heading then maybe women should be banned from men's races entirely, those booty shorts are just waaaay too distracting.