Looks like that plane spotter finally released the vid.
My pure observation:
Well, you can see the plane:
1)Last 30-20 feet suddenly bank left, left main wheel touch down first and HARD for quite awhile before right touch down. AC more to left of runway centerline if you observe the tarmac visual.
2)The black smoke is from the Grass debris kicked up from left main boogey going on it first BEFORE the nose wheel.
3) Nose wheel RE-airborne for 1-2 seconds and land again eventually hitting grass debris (coincides with attempt go around when nose veering off ?)
The whole veering seems quite linear rather than a violent swing. (more like JAY CHOU initial D mountain SIDE DRAIN-LOCK smooth Drift.
He saved the day.