I live very close to the area where he was stopped. It doesn't surprise me at all that they let him go without an arrest. They most likely would have let anyone else go too. This area of the Country is a little different.
Coming back from an auction 3 of us were driving 3 different cars, I was last in line on a 4 lane highway. My 2 friends were side by side one lost control hit the other car spun them both out and totalled both cars. When the Trooper got there he found that one friend had a suspended license(for giving fake names), no insurance, no plates, no registration, etc. He let him go with us after issuing only 2 tickets, unsafe speed, bald tires.
If this happened in NY where Im from...Jail end of story.