La til litt flere pluginger, men tror ikke vi trenger halvparten.

wp-content/plugins/shadowbox-js/uninstall.php

@@ -0,0 +1,16 @@
+<?php
+/**
+ * Uninstalls the shadowbox-js options when an uninstall has been requested 
+ * from the WordPress admin
+ *
+ * @package shadowbox-js
+ * @subpackage uninstall
+ * @since 2.0.3.0
+ */
+
+// If uninstall/delete not called from WordPress then exit
+if( ! defined ( 'ABSPATH' ) && ! defined ( 'WP_UNINSTALL_PLUGIN' ) )
+	exit ();
+
+// Delete shadowbox option from options table
+delete_option ( 'shadowbox' );