Enlightenment: Now that you're feeling better, perhaps I might take the liberty of recounting for you a similar episode which happened to me and which did not have as fortunate an outcome as yours apparently is. I had been "sober" for seven years and one winter, when we were having some family turmoil because of adolescent problems, I had a bad cold and had to give an important lecture away from home. I had not told my doctor I was an alcoholic and he prescribed for me some antihistamine which tasted like it had an alcohol base. With the help of the medication I gave the lecture and, at the reception afterwards, decided that, what with all that I had gone through I "deserved" "just one" whiskey. I started to drink but my binge drinking didn't stop for six years, when it entered a crisis. And I didn't really get into long term sobriety for 13 years. I haven't had a drink now for 23 years.
You're lucky you caught yourself in time. Good luck to you.
W.