The rider made one BIG mistake - POOR throttle control.
Focus on his right hand between 01:53 to 01:54, he chopped the throttle caused the rear tire gave up on him at 01:54
Conclusion
mistake 1: 01:37 before entering the corner, had the brake hit hard.
mistake 2: 01:40 grabbed tight on handle bar, especially on his right, failed to apply 0 pressure rule.
mistake 3: 01:42 to 01:48 unsteady body position during cornering, moving back and forth.
mistake 4: 01:42 to 01:48 again, too much weight on handlebar
mistake 5: 01:47 stiff arm, especially on his left, can see the bad effect at 01:50, all the energy transferred to his upper body when bouncing happened.
mistake 6: 01:54 chopped the throttle, causing weight transferred, lost traction on the rear and upset the front.
Now you can focus on his right hand on the throttle between 01:40 to 01:54, keep playing the throttle on and off during the cornering, FATAL!
Besides that, the stupid photographer was bit annoying, "01:01 Are you from Australia or Hong Kong?"