He would need to be assessed by a psychiatrist approved by the CAA before returning to flying duties. The psychiatrist would have to be satisfied that he would put his own family onboard with the pilot concerned, and would be mindful of any liability he might incur if his decision proved incorrect, so very little benefit of the doubt would be given. It's now gone beyond Chief Pilot/Director Flight Operations level as his fitness to hold a medical certificate has been brought into question.