It seems impossible to disable the URL rewrite. I even uninstalled the plugin, cleaned all the cache (W3TC) several times, clicked many times on F5 and Ctrl+F5 on different browser (even one browser which completely cleans cache, history and cookies each time I close it) and the URL rewrite is still there.
Can you help, please ?
Example on this page: Referencement dedicated to SEO on my website, the link to WikiPedia on the word "referencement" is still rewritten though I've re-installed the plugin and ticked "disable URL rewrite". What can I do now ?