Does D stand for Dick? Seems so. He sounds like a spoiled bully with his own anger issues. It also sounds like the 5-O down there are familiar enough with his parents (or their reputation) to not want to step on toes.
You were doing the right thing trying to walk away from the confrontation. I do hope that you speak to your counselor about this, you may still have some legal recourse against him because of your injuries; you may qualify for a restraining order of some kind and if you're fucked up and in need of treatment as a result of your injuries a small claims curt judge could hold him liable for your medical expenses. Its worth looking into if you're still gimpin it up days later.
PS I agree w you about microwaving frozen meat. That b nasty
