I think you handled it how it was best for you and that is all that matters to keep YOUR sobriety. No sense rocking the boat, its hard enough to find and keep a job nowadays with the way things are. If it worked for you, that is all that matters. Personally, I probably would have gotten angry and told them off - guess thats why I just cant deal with the corporate crap anymore!
Congrats on your sobriety, keep up the good work!