I have no answers for you and I have been sober and clean a very long time.
I see the pattern over and over in some and yet in others once they finally 'get it', whatever 'it' is, they go on to live pretty great lives.
The only conclusion I can come up with is that they are 'not done' and the 'fear' of living life sober and clean is greater than the 'fear' of being in addiction.
There are just no guarantees with an A in recovery.
Wish I had the answer.
Love and hugs,