If the policeman was just out and about, he wouldn't have had a ticket book on him, so would have gotten the details and post it later.
The Infringement Processing Bureau doesn't care about injuries, being a carer. To dispute it you will need to go to court and explain to a magistrate.
Laneways are usually No Standing as they are usually limited visibility in and out and tight for space so the risk of accident is great when people just stop a short way into them.