Registration Redirect - Custom Function

I am trying to add a registration redirect to my network site that works with membership 2. The plugin seems to break the default redirect model, and instead directs users to the "Registration Complete" page.

In Wordpress you could usually set redirect like this:

function registration_redirect() {
        return home_url();
       //or other function
}
add_filter( 'registration_redirect', 'registration_redirect' );

How do I override the plugins function for my own?