I think the Restraint-to-seat seatbelt is the "fix". That guarantees the gap isn't too big, and, even if the OTSR becomes unlocked, it would have to break the seat belt for someone to fall out. And since, in that configuration, the forces wouldn't be directly on the belt, it would take an extreme amount of force to break it. Also, if this ride ever reopens, I'm guessing the tilt out would be removed from the cycle as well.