They deferred to the most radical of all fundamentalists to save their asses.
http://www.jesuschristsuperstore.net/lfigurespages/lfjesus.html
They did plenty to be insulting to all Christians without having to draw Mary into it: 
I disagree. The reason they did that is that the Muslim faith forbids any image of Allah or Muhammed to be shown. It's still funny, and it doesn't desecrate any closely-held belief. If they had "shown" Allah, they'd have to show Mary having per-marital sex to give fair "comic" treatment to Christianity.
"per-" = "pre-"
They deferred to the most radical of all fundamentalists to save their asses.
http://www.jesuschristsuperstore.net/lfigurespages/lfjesus.html
They did plenty to be insulting to all Christians without having to draw Mary into it: