The full details of this mess are yet unclear to me, but I think a number of points should be remembered. Firstly, it is traditional that if the GM makes a mistake, the mistake is kept. While I think this was written with more public mistakes in mind, I think that it is generally wisest to not interfere, even if it unbalances the game, because the nature of the Big is that it is difficult to fully swing in one side's favor, even if they have inside info. If it is absolutely necessary to interfere, it is wisest to consult with the experienced, even for one as experienced as you, Rysz, before doing anything.