Its possible that there wasn't even an antidiluvian in the sarcophagos at all - it could have been a hoax right from the start, designed to cause chaos, or bring down the Camarilla, or any number of reasons. In my opinion this is the case with many things in the game such as the actual contents of the box before the bomb was planted, who planted the bomb, who was the real influence behind the events that took place... and so on. Of course there are plenty of theories about all of this, but the game never answers these questions in a way that one of these theories can be proven 100% and beyond all doubt - one of the things I love about the game
