The aftermath:

I haven't seen him since the incident, but his mother has offered to pay for the damages, wife is letting me decide what to do. The thing is, HE should be paying, but I know it's gonna just come out of his parent's pocket. But that sucks because they have always been so generous and helpful to us. So if I'm going to collect, it's going to end up penalizing the parents, and not the brother. If I don't collect, it penalizes me.

Either way, he gets off free. (Which is a historical pattern in his life and I feel the cause for his current state of irresponsibility)