IIRC, most of these guys carry heavy duty legal insurance which should take care of most of the legal costs. Don’t know if it applies to the fines, which seem really excessive to me.
I am not a lawyer, but I thought it was impossible to insure yourself against your own criminal acts. Misfeasance or civil liability maybe, but not criminal conviction. That would also apply to the legal fees. If he fails to reverse on appeal I suspect he will be disbarred, and never work for the government again. He’ll probably find other work in the private sector though.