So there's a definite lack of a flare before touchdown. My instinct is that a sudden, last-second change in the wind caused the aircraft to lose control authority, and the pilots were not able to de-crab or flare the plane. It looks like it landed very hard, slightly sideways, and the landing gear immediately buckled and the plane started to roll.

I'm wondering if there might have been some wake turbulence on the runway. Particularly because the airport was already operating in chaos mode, after getting hammered by a massive snowstorm that forced 300 flights to be cancelled on a holiday weekend.