Munz I would say if the throttle cable became "disconnected" the engine would be completely faultless. Therefore should not be recorded as a engine "mishap".
But I am wondering is why fuel pump (assume EDP) carby and plumbing had work done on them! or was it extra to routine maintenance? these 3 items certainly are "engine" so if one was responsible it is in effect a Jabiru engine failure regardless if it is maintenance induced. (Maintenance induced could be lack of data or other)
Not here to pro or con said motor, just facts.