Before I added the Yoast SEO plugin, I had changed the slug to my portfolio page to read "Speakers" - below is the change I made:
In theme-posttypes.php, Changed to this:
'rewrite' => array( 'slug' => 'speakers' ),
Then I saved my permalink setting to flush out the old rules and prevent 404 errors for the pages.
And since then, my links were: http://www.colabsummit.com/speakers/blah-blah
But now that Yoast SEO was added, the links went back to their original slug names, ignoring the code change. Now they read: http://www.colabsummit.com/portfolio/blah-blah
I need to switch it back to just "speakers" — so what do I need to do to disable whatever change SEO Yoast made?