Since they have hired professional firm to investigate independently to reach at acceptable decision those have in wallet have nothing to be worried about. This aspect of tokens on exchanges is still need to be seen how they handle it. Whoever did this should be brought to justice and made lesson for others with open details about that person behind the act.
Michael did it himself, no one can deny the obvious unless completely blind. Look at those youtube videos , he his alone, there isn't even an MVP! He raised money creating an erc20 token. Now he got the money, sold his share from html ad other coins and is packing his bags for Manila