Matthew Smith's The Second Plot explored that theory. I think there is are elements of what actually happened.
I get the impression that Oswald was involved in something that he thought would be some sort of stunt (not necessarily destined to happen on Dealey Plaza as far as he really knew). He was totally set up by the small group of conspirators. When the hit happened outside the TSBD, it threw him into total confusion and the realisation that it could look very bad for him. He dithered around and eventually sneaked away, heading in all directions in stunned panic, grabbing his handgun in case they came to snuff him out. He ended up hiding in a cinema, trying to find someone who could give him a lift out of Dallas.
...and yes, the government cover-up was something totally different to conspiracy by the handful of powerful individuals.
Although I believe Oswald acted alone, I do think that one of Larry Hancock's valuable insights in the past was separating the JFKA from the subsequent cover-up. CYA efforts by the CIA, FBI, SS and DPD make entire sense apart from any involvement in the JFKA.
The "stunt" theory is very hard to swallow. Even "stunts" involving the POTUS are likely to send one to the electric chair or life in prison. (This is another problem I have with any "big name" involvement in the JFKA - were LBJ, Hoover, et. al,
really willing to risk the consequences of involvement in a presidential assassination?). One thing I'll give
The Oswald Puzzle credit for is bending over backwards to focus on who Oswald really was and not ascribing motivations and actions that were completely out of character. I see him as too sharp to be duped into a stunt; his actions prior to the JFKA are difficult to square with a stunt; and his post-JFKA actions are impossible to square. If I thought I'd been duped into a stunt that turned into an assassination, I would've
run to the nearest cop and blabbed my head off. Once in custody, I would have been the most cooperative arrestee in history. You have him in confused panic ... but then morphing into the most arrogant, hostile, lying jackass possible once in custody.
We do have to account for the
entire picture somehow, be it lone assassin or conspiracy. And yes, after studying literally everything out there about Oswald the man, I am somewhat in love with my theory that he was at the end of his psychological rope when he pulled the trigger, astounded to find he'd survived the assassination, and clever enough to begin thinking in terms of Marxist theater once he was in custody. He was essentially a "psychological different" Oswald on Thursday night, when he pulled the trigger on Friday, when he found himself outside the TSBD, and when he found himself in custody.