I don't think that the man you saw at the AA meeting was worried about what you were saying so much as trying to protect you. Nothing that you say in the AA meeting is legally protected so details that can harm you are best not mentioned. People unfortunately do gossip and cops can be alcoholics too. You only tell the full truth to your sponsor or someone like a priest who must keep everything private.
IMHO, the guy was looking out for you and trying to protect you. He was your friend.
Isolating is the thing I am worst at. It's probably done me more harm than alcoholism itself... I'm not talking about going to meetings but throughout life. Finding connections with other people will substantially improve your job prospects.