Redirecting a template in WordPress using a switch. This is used inside of a plugin when you want to allow default template for a Custom Post Type your template is generating.

Template Redirect Switch

case ( is_tax( $my_taxonomies ) ):
    global $wp_query;

    if ( in_array( $wp_query->query_vars['taxonomy'], $my_taxonomies ) ) {
        foreach ( $my_taxonomies as $taxonomy ) {
            load_template( MY_PLUGIN_DIR . 'theme/archive-' . $k['type'] . '.php' );
            // load_template( MY_PLUGIN_DIR . 'theme/taxonomy-' . $my_taxonomies. '.php' );
        }
    }
    exit;
    break;

case ( is_single() ):
    // If your not my post type GTFO
    foreach ( $this->post_type as $my_post_type )
        if ( get_post_type() != $my_post_type['type'] ) return;

    // first checkout our plugin themes folder
    foreach ( $this->post_type as $my_post_type )
        if ( file_exists( STYLESHEETPATH . '/single-' . $my_post_type['type'] . '.php' ) ) return;

    foreach ( $this->post_type as $my_post_type )
        load_template( MY_PLUGIN_DIR . '/theme/single-' . $my_post_type['type'] . '.php' );
    exit;
    break;

case ( is_post_type_archive( $k['type'] ) ):
    if ( file_exists( STYLESHEETPATH . '/archive-' . $k['type'] . '.php' ) ) return;
    load_template( $this->plugin_dir . '/theme/archive-' . $k['type'] . '.php' );
    exit;
    break;
default:
    return;
} // End 'switch'