Thanks for responding Brandon, to answer your questions:
What happens when you disable Edit Author Slug?
Nothing seems to change at all.
What other plugins are you using?
Active plugins are:
Contact Form 7
Custom Facebook Feed
Genesis eNews Extended
Genesis Latest Tweets
Genesis Simple Edits
Google Analytics
Simple Social Icons
Wordfence Assistant
Wordfence Security
WP Smush
Yoast SEO
What theme are you using?
Genesis – Centric Theme
Are you using any plugins that handle redirects, or customize URLs?
I know that Yoast does this.
I notice that Wordfence Security has altered the .htaccess file.
I have also altered it the .htaccess file to harden wordpress.
What version of Edit Author Slug are you using?
Version 1.1.2
If you need to know anything else please let me know?
Justin