As someone who found an agnostic/atheist/freethinkers AA group years ago to get the support I needed, I would urge anyone else who wants to be sober but isn't sure about the "God thing" to google aaagnostica . You'll find lots of online resources and links to groups around the world.  Our meeting regularly had religious people in it and everyone was supportive of everyone else.  As my group told me, "If our group doesn't feel right to you, go visit some others.  Getting sober is the important thing."