Good Day ThunderKeys!
I don't want to sound New Agey, here (I detest most "New Age" so-called thought), but I believe that ONLY we, the hubbers of HubPages, can actually "downgrade" this site. The worst thing we could do, in my opinion, would be to overreact (or react at all) to the fact that Google has given us a lower ranking -- FOR NOW! These things are transitory.
I could wonder why overall my hubber score keeps going up and down and why it is that I have never reached the high nineties, much less that grand 100. That wouldn't do any good.
At the end of the day I believe that all we can do is to "keep on keeping on," continue to write first-class, interesting, content-rich, original hubs, read each other's work and give positive, respectful feedback, and continue to treat each other with respect as we interact here on the Q & A forum as well as in the forums proper.
Anything else, any attempts to be clever somehow would most assuredly do more harm than good. I adore HubPages and believe in it. We'll get our pride of place ranking back, don't worry. :D
Take it easy.