What was the case yesterday?
One of my competitors (currently world #2 for key search term) has not returned. I'm keeping a close eye on it, but right now it looks to me like:
1. The fix is running on that DC (my own site is now in), and (therefore)
2. The fix is flawed (it isn't working for all sites affected).
If so, we're looking at another bout of some sites coming back in, and some going back out.