Ultimate Facebook: disable meta boxes


Is it a possibility to add a feature to Ultimate Facebook to disable the OpenGraph Settings and Facebook Publishing metaboxes from sub sites?

I only use the plugin for Facebook Connect so the boxes are unnecessary in my case.

There is this line (line 593 in class_wdfb_admin_pages.php) but I tried everything and cannot get the option to false through the plugin's settings.

if ($this->data->get_option('wdfb_autopost', 'prevent_post_metabox')) return false;

Thanks in advance,

--Davey IJzermans.