He needs to change his last name to Oswald and get some of these guys on the jury. He'll walk.
The late John McAdams once observed the number of conspiracists who "identified with Oswald as kind of a victim.....somebody who was treated badly by the authorities" and how they often refer to him as "Lee" or "Ozzie." "Poor Lee."
It is strange how they have none of this empathy for others, no concern about them being mistreated by the authorities. Garrison is usually given a pass for his abuses. Of Shaw. Of Ferrie. Of even Oswald. Ruth Paine is smeared. Others accused of treason. No compassion for them.
Yes, it would take a psychiatrist to sort it out. I'm not sure if it has anything to do with Oswald per se or he is just the mechanism to exercise some other psychological motivation. There are two basic reasons for being a JFK CTer that I often see on display here.
First, many CTers can't distinguish information from knowledge. The forest and trees analogy. There are endless amounts of information in the world. When you conduct a pedantic analysis of any event, you will find some oddities, inconsistencies, or actions for which there is incomplete information to explain. They are effectively overwhelmed by these details. While certain information is necessary to obtain knowledge, if they are unable to distinguish the relevant from the non-relevant by applying logic and common sense, it becomes a morass. For CTers, the inability to distinguish all this information from knowledge means that "something" more must have gone on despite the obvious evidence of Oswald's guilt. What exactly happened they can't or won't articulate because they don't know but where there is smoke there is fire. Unfortunately for them, as the Billy Joel song goes, that particular fire has been burning since the world has been turning.
Second, there is a world view held by some individuals that no important human event can be attributed merely to chance. It is all being directed by some guiding hand. They are all over the place about who is controlling these events with some vague reference to the "government" in most instances depending on whatever paranoid axe they have to grind. In some strange way this may give them comfort that someone - even a sinister group - is in control of important events and we are not at the mercy of random forces. It doesn't even seem to really matter to them who. The objective appears to be dispel any notion that one lone nut like Oswald can influence world events to such a degree.
