That is the most terrifying video I've seen since Rodan gave me nightmares when I was a child. Heel well, Metric Man. As others have mentioned, let your lawyer handle things. That's why you're paying him. Best to keep mum.
If I may ask, how do you mount your rear-facing GoPro? I have an extra, but have never run the it on the rear. Your horrific accident is a "wake up" call to all of us.
Note to self: NEVER ride my bike in Texas.