joomla 3.2.2 update breaks custom captcha

Joomla 3.2.2 update breaks custom recaptcha components as they need mootools. To fix just add
JHtml::_('behavior.formvalidation');
to the component to force mootools to load
OR
if you're not using a component go old school and add

  src="/media/system/js/mootools-core.js"

to your template