This article about substantive investigation into the incident was quite convincing.
He interviewed 7 people directly involved, including 2 law enforcment personnel. He also had comments from airline personnel:
http://canadafreepress.com/index.php/article/17508
Read with interest; thanks.
Can't say I'm 100% convinced, but I'll consider it as highly probably true. It's certainly consistent with my belief that Mad Mo's followers have been plotting and probing consistently after 9/11.