I don’t think the local-Truman is going to do himself in and become heavenly. He is a hard nut. Techniques like electric shocks are not going to break him easily (pardon the pun). I think the symptoms that he is showing are actually of the agitation of a life-changing preparation. I am sure he is planning to join the rebels fighting in the forests. That is why he was watching all those videos about their history.
That said, I share in the opinion that the show must go on. If I am correct, he is a major security risk and he must not be allowed to bring his plan to fruition. All possible steps should be taken to avoid it.
But quite apart from the security aspect, I too will miss the show if it stops. It has added a new meaning to collaborative entertainment.