A few years back my fiancee and I adopted a greyhound that use to be raced. The psychological problems the dog had developed due to the training and treatment it received were so severe that it could barely function.
Due to finances and becoming homeless shortly later, we had to re-home him. We had no means to care for him.

Not many weeks after this we spoke a vet that specialized in traumatized ex race dogs and he told us that generally they don't recover and need to be put down as they can lose their mind so much that they actually start seriously hurting themselves (which our dog did).
Racing any animal is just sick and needs to be stopped.
If I was in QLD I'd be right there. Good luck with it!