I made some redirects with Redirection plugin (http://wordpress.org/extend/plugins/redirection/) and it worked well.
But when I wanted to change, disable or delete a redirect, the plugin ignores anything. I used the delete option in Options and Redirection plugin was disabled, but the redirects are still active.
My ISP does not provide access to the database to be able to manually delete Redirection records .
What can I do?