Proiblems with Templater after datamager thread post

[ETS|LuucEarth]

Im creating a custom Post-Registration Application system for our use.

On submit all the info is stored in custom profile fields, A post is made with the information in our application review forum.

However Im having a problem with the Template in this system.

If I render the template before the post the post doesnt happen.
If I render the template after the post, the render doesnt happen. IE Blank white page

PHP Code:

    $threaddm = new vB_DataManager_Thread_FirstPost($vbulletin, ERRTYPE_STANDARD);
    $threaddm->set_info('forum',$foruminfo);
    $threaddm->set_info('user', $vbulletin->userinfo);
    $threaddm->set('forumid', $forumid);
    $threaddm->set('userid', 197);
    $threaddm->set('title', $threadtitle);
    $threaddm->set('pagetext', $formoutput); 
    $threaddm->set('open', TRUE);
    $threaddm->set('allowsmilie', TRUE);
    $threaddm->set('visible', TRUE);
    $threaddm->pre_save();
    $threadid = $threaddm->save();
    unset($threaddm);
    build_thread_counters($threadid);
    build_forum_counters($forumid); 


PHP Code:

        $navbits = construct_navbits($navbits);
        $navbar = render_navbar_template($navbits);
        $templater = vB_Template::create('ets_tester_application_submit');
        $templater->register_page_templates();
        $templater->register('navbar', $navbar);
        foreach($userdata as $key=>$value){
        $templater->register($key,$value);
        }
        print_output($templater->render()); 


Anyone have any ideas on this?