He’s upset that other, living, victims of the collision got a larger share of the payout than he did.
It appears to be quite the other way around. The living victims were upset that he got a larger share of the settlement, and took him to court to get some of it.
Right, but now he’s upset over having to share, which is the occasion of this coin-drop. (I think that’s quite an amusing thing, too, especially since it was dropped on lawyers!)