Remove an object from Repository with foreign keys disabled

Repository.php

<?php
namespace Your\Package\Domain\Repository;

/*                                                                        *
 * This script belongs to the Flow package "Your.Package".                *
 *                                                                        *
 *                                                                        */

use TYPO3\Flow\Annotations as Flow;
use TYPO3\Flow\Persistence\Doctrine\Repository;

/**
 * @Flow\Scope("singleton")
 */
class YourRepository extends Repository {

	/**
	 * Doctrine's Entity Manager. Note that "ObjectManager" is the name of the related
	 * interface ...
	 *
	 * @Flow\Inject
	 * @var \Doctrine\Common\Persistence\ObjectManager
	 */
	protected $entityManager;


  	/**
	 * Removes an object from this repository.
	 *
	 * @param object $object The object to remove
	 * @return void
	 * @throws \TYPO3\Flow\Persistence\Exception\IllegalObjectTypeException
	 * @api
	 */
	public function remove($object) {
		if (!is_object($object) || !($object instanceof $this->entityClassName)) {
			$type = (is_object($object) ? get_class($object) : gettype($object));
			throw new \TYPO3\Flow\Persistence\Exception\IllegalObjectTypeException('The value given to remove() was ' . $type . ' , however the ' . get_class($this) . ' can only handle ' . $this->entityClassName . ' instances.', 1298403442);
		}
    		$this->entityManager->getConnection()->exec('SET foreign_key_checks = 0');
		$this->persistenceManager->remove($object);
    		$this->entityManager->getConnection()->exec('SET foreign_key_checks = 1');
	}

}
?>