Backmarker was spun out at the start-finish line and stalled while the last lap was underway. The yellow wasn't thrown until the leaders were coming into 4, and it's a short track. Backmarker never did get moving, and the field split around him at almost race speed.
smooth. that seems to happen a lot at Loudon (though usually not on the last lap). way to crash on the straights, "best drivers in the world"!