If such an injury occurred, it would seem to be an immediately reportable event in accordance with paragraph 2.3(1)(a) of the TSIRs.
One might expect that an IRM would set off a number of processes under the SMS, including the involvement of the HoFO. Stretching a little further, an event that generates a serious injury might pique one's interest in the possibility of the event also being a CAR 47 event:
47 Maintenance release to cease to be in force
(1) If:
(aa) the holder of the certificate of registration for; or
(ab) the operator of; or
(ac) a flight crew member of; or
(ad) an authorised person engaged (whether as an employee or on his or her own behalf) in the maintenance of;
an aircraft in respect of which a maintenance release is in force becomes aware:
(a) that:
(i) ...
(ii) ...
(iii) abnormal flight or ground loads have been imposed on the aircraft;
Putting aside the salt shaker for a moment, wouldn't that leave a lot of folks (including CASA) looking very nervously at each other?