The Press Conference gave Ruby his first chance to silence Oswald and the only thing Ruby could muster up was his correction about it being " The Fair Play for Cuba ". How did Ruby know that ?
So the plan was to allow Oswald to speak freely to the world press in order to silence him! HA HA HA. Ridiculous. And then the kicker is that Ruby, the guy they want to silence Oswald stands toward the very back of the room and makes no apparent effort to complete this task for some inexplicable reason. Imagine the post press conference "hotwash" of how that worked for the conspirators. Comedy gold. If the plan was to silence Oswald, there were golden opportunities for the DPD to do so in the TSBD and Texas Theatre. Prisoners also die or commit suicide in custody. No need to recruit someone to kill Oswald, spend the rest of their life in jail, and hope that person never talked. The irony is that by being as transparent as possible in the treatment of Oswald, the DPD inadvertently created a security risk by letting the situation get out of control with the press.