User Permissions

Is there anyway to completely hide this plugin from users?

I’ve managed to remove the meta boxes form the dashboard.

The problem im having is that users are set to ‘contribute’ towards the site via posts. I want to completely remove any relation to the plugin in the section where you create a post. At the moment it gives you all the possibilities in the world to customize the SEO of the post.

Any help would be greatly appreciated.

http://wordpress.org/extend/plugins/wordpress-seo/