All TRUE muslims can be radicalized in a few weeks. Technically, they are ALL sleepers.
Anybody can be radicalized to do just about anything in a few weeks.
For once, it isn't a Muslim trait but a human one. We are all vulnerable to this sort of radicalization given the correct circumstances. In combating the spread of radical Islam it would be useful to be able to contain its spread and eventually reverse it so it became an ever lessening phenomenom. We need to understand how the mechanism of this particular radicalization is working in order to do that.