He had wet himself and could not respond to their questions because of his disabilities.
Police escorted the man back to his disability service provider's house, where they were told Ms A's conduct was unacceptable.
In her judgement today, Ms Thomas said Ms A had showed a lack of respect for Mr B and had failed to care for him adequately.
"Ms A's conduct demonstrated flagrant disregard for Mr B's wellbeing, and breached his right to be treated with respect. In my opinion, Ms A's breaches... were serious departures from expected standards."
She ordered Ms A to face a Human Rights Review Tribunal hearing.
The tribunal has the power to award compensation or order exemplary damages payments.