I would be willing to bet he just made his 1,000th "shuttlecock" joke and his buddy had enough and snapped.
Seriously though, I would love to know what this is all about. Take it easy psycho, it's badminton.
Oh by the way... We keep getting e-mails from corporate on how we can't use any photos we don't take ourselves, so that's why I made my own. Stupid? Yes. Better than getting sued and then fired? Absolutely.