Yes, but I think the maintenance/patch where not really because of the event. I mean they can toggle it on and off without a patch (I think).
On another note, I just noticed your sig :
The forums would look like heaven if that is true :/
If I may add one thing, a course on probability and statistics as well.
See, that is my confusion. They have put out a small patch each time. I don't know if this was just good timing or they had to.
I know at one point they were talking about the ability to do this so events could cycle more often. But I don't know if it was ever actually implemented.