I would like to add additional comments regarding the property purchased by foreigner without permission:
Property : If the property was purchased illegally, it should be treated as illegally goods same as Drug, Stealing goods, or forbidden goods in Custom/quarantine area. It would be unimaginable if the Police tell the drug dealer to disposal the drug themself, or to tell thief return the good to the owner, or Custom/quarantine office let the visitor to bring back the goods. They are NO difference.
The property illegally purchased must be confiscated by the government body through court then to put them on AUCTION with no reserve price with reasonable time frame, say within 60 days, any profit should be confiscated and any lose must be towards the property owner plus fees apply.
In summary, The person owned that property (or they cheated to register as owner) is committing crime, they should have no rights to disposal it such as to transfer the ownership to another person or company or any other methods by themselves. 2nd it may have loophole that to transfer the ownership may result paying less or no stamp duty by the new owner.

Ming from Sydney 10-March-2015