Locked out of WordPress Site Admin after enabling Force SSL on WordPress Https (SSL)

I am in a terrible fix. I have been locked out of Site Admin and the solutions offered by the plug-in team in their documentation aren’t working. I’ve tried both methods using Webmatrix. I have to launch my site on Friday and I don’t know what to do.

This is what they suggested:

How do I reset the plugin’s settings?
Go to /wp-content/plugins/wordpress-https/wordpress-https.php and uncomment (remove the two forward slashes before) the line below, or go to your wp-config.php file and add this line. Hit any page on your site, and then remove it or comment it out again.

define('WPHTTPS_RESET', true);

The settings won’t save!

Did you reset the plugin following the steps above and forget to comment the line back out or remove it from wp-config.php?

First, rename the folder wp-content/plugins/wordpress-https to wp-content/plugins/wordpress-https-OFF so that WordPress can’t find it to run it.

Second, add the following lines to your wp-config.php file, replacing the domain name with your domain name:

define( 'WP_SITEURL', 'http://example.com/' );
define( 'WP_HOME', 'http://example.com/' );