Well, I got some good news today from my insurance carrier.
They sent me their "incident investigation" letter and made a final determination that the damage caused to my car was "100%" not my fault.
Also, it was finally determined that the damage is indeed a "Comprehensive Loss" (they earlier determined that it would be a collision loss).
Because my deductible is relatively low, they will not attempt to recover damages from the State of Oklahoma.
So, I will only pay $300.00 for a complete paint job, polished wheel refurbishing and tar removal from the undercarriage.