How to deactiavate a magento module programmatically

MagentoControllerPart.php

<?php

class MySuperController {
  protected function _disableModule($moduleName) {
      // Disable the module itself
      $nodePath = "modules/$moduleName/active";
      if (Mage::helper('core/data')->isModuleEnabled($moduleName)) {
          Mage::getConfig()->setNode($nodePath, 'false', true);
      }

      // Disable its output as well (which was already loaded)
      $outputPath = "advanced/modules_disable_output/$moduleName";
      if (!Mage::getStoreConfig($outputPath)) {
          Mage::app()->getStore()->setConfig($outputPath, true);
      }
  }
}