Having gone backwards and forwards through the video a few times, it looks to me the left wheels do not leave the ground after the first touch. Look at the left engine's height above the ground.
It looks to me that, through no action on the crew's part, the right wing dropped at the last second and the right bogie touched firmly. In my view, the PF had the aeroplane nicely set up for a decent touchdown until the @#$% dropped out of the right wing.
Also of interest is the sparks start well after touchdown, indicating the axle may not have given way on touchdown, but later on.
Unlucky...