You have to realizeit was the idea of the TALOSIANS to bring Pike back to Talos IV.
Remember, in Part One, the whole 'dialogue' between Spock and the disabled Pike, is quite bizarre (if you can consider PIke's beeping no 'dialogue' lol)-
SPOCK: you know why I've come here
*PIKE BEEPS NO*
SPOCK: I have it well planned it is only four (or whatever)light days away at maximum warp
*PIKE BEEPS NO*
SPOCK: Yes, I know...it is treachery...it is mutiny....
but I have no choice!
One suspects thar Spock's 'cooperation' with the Talosians was not 100% voluntary...
My only questions have been -
why didn't the Talosians simply create a phony communique from Starfleet directing Enterprise to SB 11?? This way they would no tbe questioning Sock's honesty. There still would the 'mystery' of a phony message, and Spock could have volunteered togo see if he could 'help' down in the communications lab, brandishing his A7 computer ranking.
And why does Spock look so shocked when they discover the base shuttle following? Was not the whole idea to a) have the court martial so the ship would GET to Talos while b) showing the images of the original Talos encounter to Mendez (and Starfleet), so SF would realize that the whole thing was truly a mission of mercy for a Starfleet hero??? This is basically what The Keeper tells Kirk, and that the Keeper and Spock had apparently discussed the whole thing! and Kirk even asks Spock, why he didn't come him for help. Yet in Part One, Spock acts like he was just going to take Pike to Talos and then face the consquences, with the turning around for the shuttle being an 'alternate plan'...
Also it would be interesting to postulate what happened on SB 11 during all of this. Was Mendez thinking that Kirk was chasing after his ship alone? How did the Talosians get Mendez (and Starfleet I am assuming) to watch the transmission? I wonder if the Talosians actually had the base personnel believe Mendez had gone with Kirk, and then 'isolated' him, so he had to watch EVERYthing that was going on - including all the action onboard the Enterprise, including the 'court martial'?
Enterprise supposedly receives a transmission from SF, where they are told they are to stop receiving the Talos transmissions, disable the ship if necessary, and that Kirk is releived...one wonders if this was another distraction to delay them from gaining control of the ship..
I realize that a lot of this was done for dramatic effect, and also that Rodenberry wrote the 'envelope' in fairly record time. BUT - I also am an unabashed fan of this episode, as some of the acting and directing is as good as the show ever got - especially those last five minutes after the transmission ends - there simply has NEVER been a better tag to ANY Trek episode....except maybe All Good Things....maybe...
(One has to wonder, though, what Uhura is thinking when she gets a transmission from SB 11..signed by a Commodore who is theoretically on the ship already

)