I have results of this "dance" since it begun for me one week ago. That is: lost 45% traffic, 53% less in Adsense CTR, principal KW hitted 8-9 positions at least. In other words, less traffic with less quality. And a curious data: one minor KW has been pushed to the top in Netherland SERPs -Ironic mode on- sadly my KW and site language is spanish and not dutch -Ironic mode off-
I don't know WTH this guys did, but IMHO this SERP situation will not change in a next future 'cause it remains a whole week. Working on several measures to offset the impact, what else!