The slow / high motion footage of Dean Harrison I think is from the very fast left/right after Bishopscourt on the run through to Alpine, it used to be a fabulous spectating spot before they restricted the area a few years ago, the quick guys have always been riding like that through there-McG especially, the road is ripply in places and they just just keep it pinned as the bike drifts and grips, it sounds like they are rolling the throttle as they pass by but it's the combination of drifting tyre, pinned throttle and the tyre going from it's tallest ride height to the shorter height right on the edge. The bikes look stable around the front end / headstock whch for me would be more of a concern if the bike was trying to go "into one".