Some bot created about 600 pages on my site. Each page had about 100 outbound links. It somehow got all 600 pages indexed. Obviously, my rankings disappeared. I deleted all 600 pages and am back to my 10 page site. But...when I do a site:url.com, Google sees all 600 spam pages still. How do I force a re-crawl of my site so Google acknowledges that the 600 pages are gone? I deleted the spam pages 4 days ago and thought they would automatically crawl and recognize this by now.