enigma1 - 3:25 pm on Jan 10, 2012 (gmt 0)
So it's not static, you are using a CMS. Physical static pages is when you have actual files behind a request. In your case the CMS handles the friendly link requests and sets up the environment so the rest of your CMS code can work.
So someone feeds your CMS with the wrong link like the one you posted above. You need to figure out why the code takes whatever they pass through and propagates it. At least for some cases. It shouldn't.