A council spokesman said it sympathised with his predicament, but parking officers did not have the legal power to arrange for vehicles to be towed or to contact owners in such situations.
The council could issue infringement notices for inconsiderate parking, but only where the person at fault could be identified with certainty.
Gray said he waited a few hours to see if the owners would return to their vehicles, then tried calling the police, but again received no help.
Eventually, he opted for the wiggle strategy and managed to free the ute, but admitted it was not a flawless execution.