Odenton animal hospital and Oliver the cat euthanized or killed unnecessarily?

This story has gone viral. The question is whether the cat, Oliver, was feral or not. He bit a veterinary technician in a back room and the veterinary staff telephone animal control and told them that Oliver was feral. This resulted in his euthanasia. If they are told the health authorities that he was stray but domesticated their advice would have been different and Oliver would have survived the experience, in my view.