There is not one single word uttered by Choudary that is not mainstream pure standard Islam. He is no extremist.
Lock him in solitary with a Koran & the blue sky for company. Otherwise he’ll be a troublemaker in stir.
Or put him in a circle of British soldiers & give them ten minutes. Drummer Rigby avenged.
True, what he is extreme in is his actions, not his beliefs.
A “moderate” Muslim wants the “extreme” Muslim to get their hands bloody for them.