You'll need to determine the site ID# for those entries and jot them down. The site ID# will be the ending number of the URL you see in your browser's staus bar when you hover over the site's link .../out.php=ID=X

Then access the admin panel and click the "You have X new site reviews to validate." link.

You should get a form where you can enter the ID # and remove the slashes.

Alternatively you could browse the review table directly using PHPMyAdmin, and edit the records that need it.