As Fred points out above, the key figure here, the absolutely essential person (after Oswald himself) around this controversy without which none of this happens, is Carlos Bringuier. It was Bringuier who had the fight with Oswald, it was Bringuier who wrote the public letter warning about the danger Oswald posed, it was Bringuier who was critical in helping set up the radio debate and TV appearance with Oswald, e.g., informed Stuckey about Oswald, et cetera. Without Bringuier's actions there is *no* incident. It all goes away.
So what does Bringuier, who is still alive, say? Bringuier has repeatedly stated that he acted on his own, he had no guidance from anyone, and in fact he never met Joannides. Never met him. Period. So where is the guiding hand of Joannides in this matter? There isn't evidence of one. How can this all happen with it all being directed by Joannides but without Bringuier as part of it? It can't.
How does Morley respond to this? By essentially ignoring it, mentioning it, at best, as a afterthought when it's actually essential for his theory to work. It's the conspiracy mindset, a world where people have no agency, don't act on his or her own but are guided by outside forces.