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I don't know what the other members of the Arbitration Committee will say, but I'll try to explain my point of view and why I voted for a rematch. As mentioned above, in my opinion, there is no clear-cut solution here. On the one hand, the rules in effect at that time were not violated, but on the other hand, I also cannot endorse awarding victory obtained in this way. According to legal principles in real life, since it wasn't prohibited at that time, it can't be judged. But we are playing a game, and in my opinion, some other rules should apply here. Suppose someone else finds some kind of bug, let's say, how to get 100 million Archons or how to escape with an army without any money. Is that possible? Yes, it is. And suppose this person wins a tournament in this way. Wouldn't that be great? The people who create games make mistakes, and that's why bugs exist, have existed, and will continue to exist. It's impossible to keep track of everything. Humanity has been writing its laws for hundreds of years, and I think that first there was, let's say, murder (in the Bible, for example, Cain killed Abel and was exiled, even though at that time he didn't violate any existing law) or the first theft. I think that first the thief was caught and beaten, and only then did the law come out that stealing is bad :D. So, it's not at all a fact that the law came first, and then the crime.
In short, call it what you want, but I didn't see any other solution.