[DetroitYES]

Ah, thanks.

Not sure why that method didn't occur to me, I had bypassed it with hard assignments like this:

$templater = vB_Template::create('atdasd_postbit_tools');
$templater->register('atdasd_postid', $post['postid']);
$templater->register('atdasd_threadid', $post['threadid']);
$templatevalues['atdasd_postbit_tools'] = $templater->render();
vB_Template::preRegister('postbit_legacy', $templatevalues);