Great Video, and reactions. Glad you're OK, seems you were instantly aware and reacted perfectly.
Great hazard safety vid also. On a bike I'd be hoping to be in postion 1 as the junction before the 'OMFG' was empty and on a RH bend. That should have been a good enough position to avoid the rapidly oncoming 'heavy mass challenge to the laws of conservation of momentum'.
(Which you would lose on a scale that is not worth thinking about).