Fatal Error when Uninstalling

I get a similar error to the 1.2.1 version when I try to uninstall (I am running the 1.2.2 version of this plugin):

Fatal error: Using $this when not in object context in /vservers/c145013-h216860/htdocs/wp_test/wp-content/plugins/wp-mailto-links/includes/class-admin-wp-mailto-links.php on line 112

If I go into the plugins and manually delete it – will it leave anything in the database or do I need to wait for the updated version before fully removing it from my website?

P.S. I’m not uninstalling because I dislike the plugin just don’t need it for this project 😀

http://wordpress.org/plugins/wp-mailto-links/