Thankyou so much!!!
I have just read your reply. You're a lifesaver!!
I also read its possible to unplug the 4ws solenoid located in the boot, to disconnect the rear wheel, hence another way to lock up/immobilize the rear steering.
But I will likely contact your guy and see.
On my 4ws mx6 a guy in Cheltenham that worked at Mazda for years knew exactly what to do, there is a tool bolted on the rear axle. They are on the Corner of Reserve Road and Bay Road Cheltenham (302 Bay Road) [Melbourne] As you are in Melbourne give them a call 131229. [they can look up my registration to find out who actually did it ROH-704]