Set Harth wrote:
Right, but that could still mean they're on the Klingon side.
The lines are vague enough to work two ways:
1, They're on the Federation side; either with a toe on the line, oe hugging it close in friendly space
2, they're on the farside of the Zone hugging the Klingon edge of it.
I'm inclined toward Marcus blowing out the engines when they're closer to the farside, but still in the Neutral Zone; close enough not to be "in violation of the treaty" but far enough along it makes more sense to keep going with the mission and make repairs on route. Marcus--as most of his plans seems to be--is likely figuring on Kirk being cocksure and (frankly) stupid enough to continue on with a wounded ship. It works better with his plot to start a war.