Attacking the intentions of anyone is a very weak way to defend your self, and shows just your inability to justify what you did.
As many "ordinary traders" using MT4 brokers, I make screenshots of my history every day; and this was very usefull when I had to do a court case against my broker for the same kind of "correction" as you did.
Moreover, as financial-educated person, you should understand that its never allowed to delete any lines in a historical report. If there is a mistake, you have to add a new line to correct it.
Anyway your justifications about wrong quotes during 3 days is just ridiculous; also you can check the trades of the report with quotes from other brokers and see that the prices were into the normal prices of that time.