As a leader of a jihadist organisation committed to overthrowing the Libyan dictator Muammar Qaddafi, Noman Benotman was regarded by Osama Bin Laden as an ally.
However, shortly before 9/11, Benotman cautioned Bin Laden against targeting the United States.
In the programme, he explains why he now publicly criticises al-Qaeda's strategy and lack of theological justification.
Dr Fadl, one of the architects of the most extreme jihadist ideology, now calls al-Qaeda's leadership "extremely immoral".
Sheikh Salman al-Oudah, a Saudi religious scholar, once credited by Bin Laden with inspiring him to take up "my duty of enjoining what is right and forbidding what is wrong", has recently denounced the al-Qaeda leader.
Furthermore, the targeting of Muslim civilians by al-Qaeda affiliates in Iraq and elsewhere is undermining popular support.
A while ago, I predicted that ordinary Muslims would get disgusted with Al Queda-- sorry, no cite because I think it was just in conversation. It didn't seem as though it was plausible to anyone I said it to, apparently because none of the people I discussed it with wanted to believe that Muslims have ordinary human motivations.
I didn't get it absolutely right. I thought that terrorism would disappear (hasn't happened yet, though we can always hope), and no one would be sure why.
That top Al Queda associates would come out in opposition is more than I was expecting. On the other hand, Al Queda is probably the stupidest political idea I know of, though Pol Pot is in the running.
All totalitarisms are not alike. Nazism is dumber than Communism-- it ended so much faster because it was based on worse ideas.