[kh99]

Hmm...I guess it depends on what the cat_yars_postbit_style template expects to find in $post. Certainly if there's an 'if' on THIS_SCRIPT somewhere then you'll need to add private to the check, but it could be there's another plugin somewhere that's adding the data to $post. So I'd check that template then search the plugins for any fields that are used from $post (i.e. {vb:raw post.something})

BTW, this is kind of on the line between a programming question and help with a mod, and normally we require questions about mods to be asked in the mod thread. So I'll just say that maybe you could get more help by posting your question in the mod thread.