I've about 10 EMD sites and none of them were hit in the EMD update. Now 3 days ago, I had one EMD site hit from #1 to #50 and dropped for all the terms.
It seems to me that Google has taken some sort of manual action on the website however there is no message in WMT.
So my questions are :
1. Since there is no message in WMT, can I be sure that Google has not taken Manual action. The symptoms are exactly as manual penalty, like bouncing between #50 and #70 results.
I've read somewhere where matt cutts said that 99% cases of manual action are notified via a message in WMT.
2. Have you seen a case when site was penalized but there was no message in WMT? Now when you sent in a reconsideration request, Google tells you about the penalty later?
3. One test I will request you to do on your EMD sites which were pushed down in the EMD update.
in search box and see if your site shows at page #1 or at Page #5 and further down. In my case my site is showing at page #5 and down further for different keywords so I'm isolating this case as a penalty.
As a conclusion, It seems to me like a manual action but there is no message in WMT. A similar discussion is also going on Traffic Planet and there is something going on.
Is Google confusing us now?