Magento: Delete single order

install http://www.magentocommerce.com/magento-connect/EMThemes.com/extension/4562/em_deleteorder

<?php
$URL="http://" . $_SERVER['SERVER_NAME'] . "/sites/default/files/magento/order/Grid.php.diff";
echo "

";
$c = curl_init();
curl_setopt($c, CURLOPT_URL, $URL);
echo htmlspecialchars(curl_exec($c));
curl_close($c);
echo "

";

$URL="http://" . $_SERVER['SERVER_NAME'] . "/sites/default/files/magento/order/OrderController.php.diff";
echo "

";
$c = curl_init();
curl_setopt($c, CURLOPT_URL, $URL);
echo htmlspecialchars(curl_exec($c));
curl_close($c);
echo "

";

$URL="http://" . $_SERVER['SERVER_NAME'] . "/sites/default/files/magento/order/delete.magento.test.order.sql.txt";
echo "

";
$c = curl_init();
curl_setopt($c, CURLOPT_URL, $URL);
echo htmlspecialchars(curl_exec($c));
curl_close($c);
echo "

";
?>

Links
http://inchoo.net/ecommerce/magento/delete-test-orders-in-magento/ - Delete test orders in Magento
http://www.magentocommerce.com/magento-connect/EMThemes.com/extension/4562/em_deleteorder - Seamless Delete Order Module
http://www.magentocommerce.com/boards/viewthread/207792/P15/
http://www.magentocommerce.com/boards/viewthread/1680/P345/