He does the coding himself. From what he told me, he makes it to where it's undetectable unlike the version that EQmule puts out even on live.
I think the key difference between himself and krono farmers is that he does not use it to krono farm items or plvl. He uses MQ2 in his own instances. He runs his own raid crew and does raiding on his own, doesn't sell anything for krono or RMT that I know of. That way he draws no attention to himself. The other crew of MQ2'ers that I knew about on phinny also only did it in instances (at least until PoP, where they started using it in open world raid zones from prior expansions). They ran their own raid crew on the side to raid gear toons out and sell them on RG. A lot of toons that were sold on RG during phinny's time were sold from these guys. It consisted of Thellonious (who I think is the GL of entendre) and a few other higher up officers in entendre. Not surprising they were also the first ones to find the defiant exploit and used it as early as velious. Thellonious and other entendre officers were even selling the information for krono or $ during Luclin. After a few of us found out that they were selling the information, we confronted them about it and they got scared thinking they were going to get banned and posted the information on DB forums an hour later in an attempt to cover themselves.