Well that episode ending was certainly a twist.
But it still annoys me to no end that a major plot thread is driven by the two most incompetent, poorly written and badly acted characters in the entire story - the two engineers. If the writers were clever enough they could have focused more on Maeve's prowess instead of the ineptitude of these guys. It's just too convenient to let a series of improbable events be explained as the misdeeds of two stupid people. I have tan lines from the amount of facepalming that comes from watching what these guys do - how they ignore every opportunity to override Maeve, how they remain ignorant of the consequences of everything they do, how readily they follow orders from Maeve ... etc. Can't they even show them in a sequence outside of work discussing what they're going to do about this renegade host or what it could mean? Are they so completely idiotic that they can go home and believe everything will just magically work itself out? Or are the writers too myopic to consider that these two characters might have a life outside of the plot?
Maybe they are just covert hosts (like Cullen) programmed by Ford to be incompetent enough to provide the opportunity to see if Maeve can take the initiative for self-preservation. That's the only remotely plausible explanation. But, if that's the case, why did he have to program them with such bad acting?