IRISH, heck if I know for sure. I am no lawyer, I finance companies for a living! Although, next time a take one of my lawyer referral sources to the strip club, I can ask!
Anyway, certain MM's had to take those certs and release the shares into the markets for the hijackers. I would assume they are responsible for validating those certs, but not sure how much DD they are required to do to be released from any liability. Of course, the MM's who were only trading in the market have nothing to fear.