To be honest I think you are asking
How can I stop WordPress from responding to URL's for static pages that I save in other directories on my server
Basically its in 2 files
- your VHOST (which maps mydomain.com to www/some_folder/ )
- your .htaccess file which manages redirects
So you can do 2 things ...
1. get a new VHOST for subdomain so something-mydomain.com maps to another a folder on your server - or -
2. update your .htaccess file to include redirect urls
your .htaccess file will pick up any requests for urls BEFORE WordPress gets involved.
so you can have
mydomain.com and WordPress will manage all requests and then create a rule that says
mydomain.com/this_page.html is in
here is an example of code for a redirect to a static page that you can add to your .htaccess file:
#static page redirects here
redirectMatch 301 ^/this_page(.*)$ /this_folder/this_page.htm'