Not likely, since it has never happened to WoW before in anything approaching those numbers and since the influx of players was actually more than most MMOs even have (ever).
Bliz had a rare opportunity to recover from years of loss and pretty much just screwed the pooch with their current "vision". Clearly, the vision is flawed. It simply didn't work.
So holding the course on the vision might not be the best of ideas... time will tell I guess. At least it is fun to watch it unfold.