Ok I'm going on a long limb and probably way off base but I don't think stephen is the mole I still think Kalani is, But what if Stephen has a thing for Lizzy and just prior to her shift she was knocking boots with Saul and Stephen found out without them knowing. Got pissed and spiked her beverage causing her to fall asleep and thereby setting up the scenario to be booted. I mean he was overly pissed off about the situation. Plus it could fit in with the double meaning as in, she gets pregnant???