have a look at this
BBC NEWS | World | Wind flips plane over on runway
I reckon it has nothing to do with wind.
He is too fast...is missing his turn off from the runway, hits the brakes hard (left side more than right) trying to make the turn, realises he wont make it, and straightens out, and now realises he is heading towards the grass, so to avoid going onto grass he jumps on both brakes hard, and upends the plane.
looks like another good bit of journalism.....