This one's for the track-heroes out there. I have a decent idea about general body position and the dynamic nature of it while going around a track, but why do racers occasionally fully take a foot off the peg and really stick (dangle) their leg way out in mid air pre-corner before tucking it back in and leaning over to drag the knee? Is it serving as a pseudo air-brake; is it a way to slow a certain side of the bike down; is it a comfort thing before tucking the knee down for a drag; is it a way to balance the body toward that side of the bike a bit better?
Just a point of curiosity, really. Any ideas/thoughts would be interesting to hear.