They...aren't going to the Master's TARDIS. Andrew isn't sure whether or not to be relieved about that; at least if he can get loose he's outdoors where he can hopefully find cover. On the other hand, there's nothing out here to use against the Master.

Really, though, all it would take would be for the Master to squeeze. At that thought, Andrew starts squirming again, grunting with his efforts to extricate himself.