public function banProductPageCacheCheckStock($eventObject) {
        if (Mage::helper('turpentine/varnish')->getVarnishEnabled()) {
            $item = $eventObject->getItem();
            if ($item->getStockStatusChangedAutomatically() ||
                    ($item->getOriginalInventoryQty() <= 0 &&
                        $item->getQty() > 0 &&
                        $item->getQtyCorrection() > 0)) {
                $banHelper = Mage::helper('turpentine/ban');
                $cronHelper = Mage::helper('turpentine/cron');
                $product = Mage::getModel('catalog/product')
                    ->load($item->getProductId());
                $urlPattern = $banHelper->getProductBanRegex($product);
                $result = $this->_getVarnishAdmin()->flushUrl($urlPattern);
                Mage::dispatchEvent('turpentine_ban_product_cache_check_stock',
                    $result);
                if ($this->_checkResult($result) &&
                        $cronHelper->getCrawlerEnabled()) {
                    $cronHelper->addProductToCrawlerQueue($product);
                    foreach ($banHelper->getParentProducts($product)
                            as $parentProduct) {
                        $cronHelper->addProductToCrawlerQueue($parentProduct);
                    }
                }
            }
        }
    }