Speaking as a wannabe Pshychiatrist aka dr lectur you know as well as me Malaysian Eaglet this type of guy. Not Parkinsons but simply he has convinced himself that everything he says is true, A case of self convinced importance and ego born from no one able to oppose him.
Best advice is ignore and it will go away in due course. Problem is how quick.
Hopefully still stuck in Norway?
Reargards,
