A local bar association is sometimes rquired to take sanctions when a member is convicted of criminal behavior. Note the word CONVICTED, you can expect that even if he is photographed--he will then try to settle and drop the charges and the DA or other prosecutor will encourage you to do this. If you don't settle, he'll find a way to make your court visits time consuming and expensive, so you are in for a fight up front.
Find out what you can about the local (not just state) bar association and what sanctions they are REQUIRED to take, that way you'll know what to aim for.
I'd still invest in the video cam. Paint ball players also use "paint grenades" for their fun, that scatter bright dye for 20+ feet. Might be interesting to see if you could rig a remote control to that--and tell the police "Just look for the man covered in red paint."
My evil twin brother would say forget all the bs, just burn his house down at 3AM after making sure to seal all the exits. But, sometimes he forgets that justice must take a back seat to civilized behavior.
If he wants to settle: How about some public service work, scraping, cleaning, and painting the bottoms of every boat at the nearest marina, every two months? That's almost as good as keelhauling.