Bypass WordPress' tolerance of Permalinks

Hi guys,

I’m writing my first plugin for wordpress. Of course I want the results to be search-engine-friendly and have a logical hierarchy in the url.

Therefore I am using custom rewrite rules that look something like this:

http://pastebin.com/k9nDT4XY

This is working quite fine, I only have one problem:

If I have a page called “Event Management” with the URL-slug “event-management”, wordpress calls that page instead of letting my plugin know, that “showevent=1”.

How can I bypass this tolerance of “short” permalinks or how do I overrule this tolerance? How can I tell wordpress, that I am preciseley looking for “EVENT” and not something with “EVENT” in it?

Thanks for your help, guys. 🙂

Cheers
Macks

EDIT: oh yeah, I know, that using wp flush on every init isn’t very economically, this is just for testing purposes.