How many bad lawyers can fit on the head of a pin? Wait, do I mean squeeze through the eye of a needle?

Whichever, here’s a guy who stole money from two clients and is already in jail (via New York Law Journal). What I’d like to know is: who turned him in and how? Did his clients have to file a complaint with the Disciplinary Committee? That is, was it entirely up to his (presumably laymen) clients to complain? And how long did it take?

Disbarred Lawyer Sentenced in Second Theft From Clients