Yii: Simple HMVC

HmvcController.php

<?php
/**
 * Yii, simple HMVC
 */
class HmvcController extends Controller
{
	public function actionIndex()
	{
		echo $this->execute('/hmvc/do/id/123');
	}

	/**
	 * Processes the request using another controller action and return output.
	 *
	 * @param string $route the route of the new controller action. This can be an action ID, or a complete route
	 * with module ID (optional in the current module), controller ID and action ID. If the former, the action is assumed
	 * to be located within the current controller.
	 * @return string output
	 */
	public function execute($route)
	{
		$get = $_GET;
		ob_start();
		$this->forward($route, false);
		$out = ob_get_clean();
		$_GET = $get;
		return $out;
	}

	public function actionDo($id)
	{
		echo 'actionDo #'.$id;
	}
}

good , but what about ajax calls requested by "/hmvc/do/id/123" ??
HmvcController will swallow them ?