Mostert broke both his leg and left wrist during the crash .
The accident saw Mostert ( and his co-driver Waters ) out of the event and cause qualifying to be red flagged and the session postponed .
Mostert broke both Mostert 's leg and left wrist during the crash .
The accident saw Mostert ( and his co-driver Waters ) out of the event and cause qualifying to be red flagged and the session postponed .