I would not rule out a g - loc event. It happened to a red arrow and a blue angel in recent years. AH is obviously a professional aviator in either the airline context or fast jet: he did not intent to have a catastrophic accident and that should be the starting point. However, 11 members of the public were killed therefore there will be an enquiry and there will be conclusions and new rules I suspect. Commiserations and condolences to all involved.