I was just wondering about that Irelander; I don't usually go to the General Aviation part of the IABB, but in terms of the air transport part, there was a lot of interesting discussion of what might happen with EI's fleet, bilaterals, etc.
One could suspect it was someone trying to stop more detailed discussion, but the most likely thing is that it's just a bunch of cyber vandals, with nothing better to do than destroy. I have to say I find it pathetic and saddening that obviously clever people could use their skills and knowledge in such a destructive way. But that's life, I guess.