Welcome back and good on you for coming clean to the people that matter. As far as the professional life is concerned, I understand the point about how you think it could hurt you. I also get what others are saying about whether it is totally honest or not to go to another town and pick up a chip.
You have to decide what you need to do for you. In my opinion, if it would really and truly hurt your livelyhood, and your sponsor and other professionals agree with that, I would do what it takes to protect that. As much as the second A in AA is supposed to be, it is not always the case. People do talk, at least in my AA. I understand that it is not supposed to happen, but anyone who says that AA is always and truly anonymous must be blessed with a city of saints that I have not lived in.
Just my .02 and congrats on the new start.