Endless Redirect Loop Caused by Changing the URL

I made the mistake of creating the URL, publishing, changing the URL, updating, and then changing the URL back to the original. Because WordPress tries to help out by redirecting old urls to the new URL, I am get the dreaded endless loop. I was wondering if there was a way to flush these redirects to get it back to normal. The only reason why I would prefer to do this is (as opposed to just creating a new URL) is because we already set up campaign URLs with Google. I’m also just interested in figuring this out for future reference.

Rich