Methinks the injuries would be a result of not landing with both skids flat on that dune which didn't allow the skids to splay absorbing most of the energy. Rolling over upside down wouldn't help the spine either. Remember, Alice Springs area is +40C (if not near 50C with the current heatwave) this time of year.
No way they going to rebuild that wreck
Don't underestimate the ability of PHS engineers....
The good thing is there was no post crash fire which was once normal with hard landings on that type. Wishing those injured a speedy recovery.