public function untag($bean,$tagList) {
		if ($tagList!==false && !is_array($tagList)) $tags = explode( ",", (string)$tagList); else $tags=$tagList;
		foreach($tags as $tag) {
			if ($t = $this->findTagByTitle($tag)) {
				$this->associationManager->unassociate( $bean, $t );
			}
		}
	}