Awesome post...
I have very rarerly though about a drink in like 18 months.
Just recently (2 years sober) I am in the store buying ice cream. At the check out counter I started doing the math of how much vodka I could get with my ice cream money. It seemed like a good idea to drink :-) Well I didn't but booze is called cunning and baffling for a reason.
IMHO you did not drink so I would not classify it as a setback, seems to me like a step forward, you stayed sober.