I've had that, been quite a few years though. Mine were always due to water getting into the throttle/brake servo. They always seem to go to WOT with hard power on them that a spring or fail safe does nothing against. Have a few memories of trucks going off over hills and hearing them smash into something at full tilt while the engine screams like mad until I get to it and rip the fuel line off.Awesome collection, I had a run away(I don't think I did the receiver Bind properly, I tested the fail safe after this and made sure it was fine). It went full throttle on 3s into a steel fence tube, I'd had the car running for less than 10mins.
Good times... lol