How to prevent mootools loading in my modules?

In the process of writing a custom module I noticed how at the end of my formlet (produced by the module) mootools is included. I don't want/need that and browsers are throwing errors because it gets attached after the </html> tag. Whats worse, internet explorer 8 stops handling other scripts because of it.

Here's what im seeing at the end of my closing hmtl tag:
<link rel="stylesheet" type="text/css" href="/manager/media/style/MODxCarbon/style.css" /><script type="text/javascript">
// <![CDATA[
window.addEvent('domready', function() {
var sysAlert = new Element('div').setProperties({
'class': 'sysAlert'
});
sysAlert.innerHTML = '<div style=\'margin-left:10px;margin-top:3px;\'><span style=\'color:maroon;\'><b>Course Modules - Module runtime error:</b></span>

An error occurred while loading the module. Please see the event log.</div><hr sys/>';
var boxHtml = new MooPrompt('System Alert', sysAlert, {
buttons: 1,
button1: 'Ok',
width: 500
});
});
// ]]>
<

Nowhere in my module am I calling mootools. So the question is... What is it that adds this junk to my module, eventhough I didn't call it anywhere and more importantly.... How do I get rid of it?

Mootools is part of the Manager frameset, so is always present, but doesn't affect the module code.
That's a warning that you have a run time error with your courses module, which when fixed would disappear.

*I think their are busy completely removing mootools with Clippercms