Ah yes, while Kate calmly forced her partner to just drink enough water to purge her of the brainwashing, John is a man, and thus must communicate with his fists.
Next time they ask her to supervise they're going to need to ask her to turn in her denim summoning flutes until after the exercise.
And wait a minute, why doesn't she wear a protection charm? Obviously before she didn't before for sick gains but now that she's hit the (presumabe) level cap...