Well Pado I think the reason why Moggi makes these dubious jokes is because he believes (perhaps correctly) that he has now become untouchable.
After all, we’re talking about a man who has been involved in basically all the serie A scandals of the past 25 years and who has always come out unscathed. There's even more to it : while heads rolled around him, Lucky Luciano has always emerged stronger and more powerful from it.
The betting scandal in the early 80’s had the effect of earning him a name in the football world. As the general manager of Maradona’s Napoli, he has seen all the major figures of that crazy era roll into the dust (starting with Napoli’s president Ferlaino) while himself becoming the man you can't do without. He then went to Torino and history repeated itself : the team and its president Borsano gets swallowed up by scandals but Moggi saves his arse (despite his friendliness with referees, the Lentini case, other unexistent transfers of which as the team’s director he could not be unaware). And finally his advent at Juve and all the recent history which most of us know. So if you had managed to "come out clean" out of this all mess, wouldn't you start feeling omnipotent and begin to make dubious jokes about it publicly?
Although Moggi's qualities as a talent scout (ex : launching Zola at Napoli) and his proven flair for excellent bargains (ex : buy Vieri for peanuts and sell him for a fortune, and so many others) are for all to see, the real story of his career remains an enigma, and I find it a bit sad that some of the Juve fans here idolize him while my own juventini cousins in Turin consider him as little less than a mobster.