As much as it pains me to say it, drugging subordinates (or, supplying drugs and perhaps peer-pressuring) and alcohol excesses in the workplace are not complete unknowns.

EDIT You know I should really read the article instead of relying on internal mails; I see now the allegations made against Serge - I am quite certain that nobody at Massive was aware; and certainly Yves himself was not made aware.. which doubly explains why the head of HR was let go..