McMohan - 6:33 am on May 6, 2013 (gmt 0)
Thanks for the confirmation Tedster
Deindexing from Google will not fix the problem of having poor quality pages on the site or the 404 errors you will have if you only delete those poor quality pages.
During the cleanup act, many entries are made to robots.txt - few folders, few files and many wildcards are disallowed. URL parameter handling was defined in WMT. A majority of these disallowed pages continue to be present in SERPs and it may be awhile before they are out. To cut the time, it was a suggestion to remove all the pages and let only useful pages in, since not-useful pages are blocked in robots.txt. Not so bad an idea to dismiss outright?