I have about 60K pages of my site I'm trying to get Google to purge from the index. They are all wearing a noindex tag but Google has been slow to remove them. I can't use the WMT remove url tool because they are in different directories here and there and obviously removing them one by one isn't exactly feasible. They are in our XML sitemaps which are submitted to Google because I want Google to crawl them and see the tags (once they are all removed I'll pull them from the sitemaps).
I was searching to see if there was a faster way to remove them from the index and saw that Google will obey the <expires> tag in an xml sitemap for their custom search. I can't find anything that says they do, or do not, obey it in a regular sitemap for the main index. Does anyone know if it is effective in a regular sitemap to get urls removed from the index?