fathom - 10:45 pm on Apr 9, 2013 (gmt 0)
Just to reiterate - my site ranked well for a decade with only a couple of dozen pages indexed.
I would take a step back and re-think your assumptions as correlation does not always imply causation.
The vast majority of websites that pre-date Google that have gotten PANDAized or PENGUINized also suggest the same things but of course pre-dating Google is not likely part of Google's algorithm.
Additionally something you did five years ago would have likely impacted you 5 years ago.
Your observations are interesting but you may have locked onto the wrong **** pile.
That said, unblocking Googlebot can be done in as little as 5 business days [support.google.com...]