I know nothing of the clamshell restraint design or patent and I'm not going to pretend to, but, could we be seeing a slow erosion of the mechanical restraint ratchet system which has lead to mechanical failure? I know there are redundancy measures, but, if the 'second' redundancy measure is a mechanical system which is never tested or put to use because of the reliability of the first redundancy system, could that have failed too? Given we know the train cannot leave the station without all lapbars being locked and cleared it points to some form of failure mid ride.
I've seen the ORP, its not graphic but it is shocking. I cant quite tell if the restraint is fully open, it certainly looks to be, but, I cant really remember just how far the older style clamshells, compared to say, Shambhala's, which open out really far.
Edit: Just had a nosey at Goliath in the station with its restraints fully open, I dont believe the restraint is fully open, but the angle of the ORP does make it quite hard to tell. It not being fully open doesnt mean to say that it didnt fail, as I imagine forces / the rider would stop it immediately going back to its upright position.
Not going to post the ORP for obvious reasons.