Overtaking on a blind corner

A group of riders were riding down a windy single lane road (with plenty of overtaking spots, and a natural stopping point only 200m further down the road). A ute driver (with a trailer in tow) decided he couldn’t wait, and passed the group on a blind S-bend corner. Cars were regularly coming the other way. If one of them had done that while he was passing us, there would have been carnage. My Fly6 and Fly12 caught the lot