Great to hear that. Are you also noticing changes in the site: operator and WMT IBL listings?
Interesting analysis and I think you make sense how a small factor change can affect us so heavily. But I'm not sure if this alone could be the reason since back in March when I still had pre-Mayday traffic, I used to have a Wordpress plugin that linked pretty deeply to old and new pages from each of my posts. There couldn't have been a Wordpress website that was more appropriately deep-linked.