I dont think he will. His speech has been strong regarding radicals. I had the pleasure of seeing him twice now...He is much better in person. Of course, the media does not give him much attention.
I don't know what throws him off during a televised appearance. Maybe it's the cameras, maybe it's his speechwriters who tell him to knock off the "wanted dead or alive" lingo. Shame really. He would have much higher support among the populace if he was more natural-IMHO.