aquadalte;
Could it be because the pilot applied full right yoke? (during the roll out, after touch down.)
That is precisely why all the spoilers except for the one ground spoiler on the left wing are down; they are responding as ordered, with right full control wheel. Notice how deeply the right wing dips at touchdown as the right wing spoilers come up - the left wing is still flying - exactly the opposite outcome intended by the use of full-right control wheel, (which is, "keep the upwind wing from rising"). The engine comes very close to the runway. The left spoilers slowly come up near the end of the landing roll as the wheel is neutralized.