If that group was so powerful ... the DPD would have rushed in the TSBD immediately
and if he came out it should have been feet first. .
Perhaps true if Oswald was the shooter. But who in their right mind would rely on Oswald alone to be the shooter? Who in their right mind would use a crappy bolt action rifle with a useless scope to do the shooting? That's what the Mauser was for. The MC was the plant gun and the DPD staged the crime scene before and after the Big Event. They needed to clear out the actual shooters and then convince Oswald to stick around and wait to be caught and carried out feet 1st. Oswald was having none of that. He might have fled the scene once he realized he was being set up as the patsy. IMO, he did everything according to plan until things went awry at the pick up location where Tippit got murdered. That's when Oswald knew he was the pasty.
All it takes is 1 other person involved in the Big Event for Oswald to not be a lone nut assassin. I'd say the actions of the Keystone DPD and much of the evidence demonstrate that this was clearly a conspiracy. In which case, Oswald was not a lone nut, he was a patsy. Every good coup needs one. How involved he was in the Big Event, is the only thing up for debate. IMO.