Hud - I concur. His arse is not on that seat - his left inner thigh is.
I'm also impressed with how, for the most part, those racers get up and walk away after they fall. I've studied this closely - it seems to me that they place a high priority in separating themselves from the bike. Fight the road, not the bike. They also tend to go limp and allow their bodies to slide as much as possible down the track, as opposed to fighting it and risking flip flopping at speed, where breaking bones and other things are more possible. With the sliding method, of course the leather suit is wonderful protection against road rash. To that extent, if you wear jacket and pants combo, always remember to zip them together, lest your jacket doesn't ride up your back during the slide down the belt sander.