"If she'd kept her head down it would have been okay, but she threw her head up and catapulted me in the air,'' he recalled, sitting in his trophy-crammed office at his Warwickshire stables. "I've never worked out why I couldn't get my hands out to break my fall. Instead the crown of my head hit the floor with my entire weight behind it. My body knuckled over, and I heard a terrible crack.