tedster - 4:50 pm on Mar 21, 2011 (gmt 0)
Do NOT submit pages that you intend to keep on your site because they will be removed from the index for at least 90 days.
That used to be true, but it's no longer the whole story. Google improved the URL Removal process a while ago to allow speedy reinclusion, because after all, stuff happens ;).
You can reinclude your content at any time during the 90-day period by following these steps:
1. On the Webmaster Tools Home page, click the site you want.
2. Under Site configuration, click Crawler access.
3. Click the Remove URL tab.
4. Select the Removed content tab, and then click Reinclude next to the content you want to reinclude in the Google index.
Pending requests are usually processed within 3-5 business days.