He was having an unexpected allergic reaction to a prescription anti-psychotic medication he had just started taking that morning. On orders of his doctor. This particular drug interacted with two medicines he was taking, again at a physician’s direction, to help him control his bipolar disorder, and this caused the unfortunate involuntary actions that, regrettably, transpired in the immediate aftermath of the stressful job interview he was forced to undergo.
That is a too plausible defense! Kudos.