Does Flamboro ENFORCE the yellow line rule? Is it in their rulebooks? Also, if he is on the line, and does not better his position (pass the guy, closing the door on him and spinning out) does it pass as an infraction?

As I see it, he bettered his position when buddy moved down, and spun out from turning left too tight (ahem clearing my throat). He was trying to protect his position, and he lost. Just the way I see it.

Remember Busch and Stewart at Daytona in July?? well this is a pretty similar deal, last lap, risky move as made, someone tried to protect their stop like they had every lap of that race. The 72x was on his bumper the whole time, he did well to not spin him in earlier laps. Good for him he ran a good race. 

Is the 72 an "out of towner"????

he is!

Lots of guy's run the apron including the track champion...no yellow line rule. None of it makes any difference, there's no need to bash a guy's car.