In my experience most terrorists would be considered radical. Redundant.
Well, I don't care for the term "radical" in this case because terrorism is at the core of Islam, rather than just being a radical interpretation of it.
Mohammed himself was a psychotic terrorist, and he is the perfect man and the role model for all Muslims. If anything, Muslims who oppose terrorism are the radicals, because they are pushing for radical change to the religion -- although I can't say how many there may actually be.