I'm not one to take Disney's side all of the time, but breakdowns like these have happened with every new attraction everywhere since the dawn of time, and it is only reasonable to expect them more with a more complex attraction. There simply is no way to prepare a ride for the burdens it assumes once it is opened.
I just can't bring myself to understand faulting Disney for not being prepared for something that their was no way to prepare for. Sure, fault them for poor crowd control, lack of shade, not enough food etc. etc. with projects because those things CAN be planned for. So be frustrated at the RSR breakdown situation, not the innocent actor.