Apply a module layout to zfcuser

i'm working on zf2 and try to use 2 differents layouts. 1 layout for a public module and another one (private layout") for all the others. Its works pretty well but my zfcuser module in the public module use the other layout :/ i tried this :

'template_map' => array(  
    'zfc-user/user/login' => __DIR__ . '/../view/layout/blank.phtml', // blank is my public layout 
),

Instead of get the form in my layout, i get my form in the public layout AND in the "private" layout ... Does someone can help me ?

The code evan provides here http://blog.evan.pro/module-specific-layouts-in-zend-framework-2 will do what you need with one minor change, replace __NAMESPACE__ with 'ZfcUser' so that you're listening for ZfcUser controller actions

public function init(ModuleManager $moduleManager)
{
        $sharedEvents = $moduleManager->getEventManager()->getSharedManager();
        $sharedEvents->attach('ZfcUser', 'dispatch', function($e) {
        // This event will only be fired when an ActionController under the ZfcUser namespace is dispatched.
        $controller = $e->getTarget();
        $controller->layout('layout/alternativelayout');
    }, 100);
}