Not the best way. It does do the same thing that meds do. Not recommended, though... The addiction "side effect" can be "troublesome".

I've tried to avoid getting into this thread, but this here bugged me and is wrong.
1. Alcohol does not "do the same thing that meds do." Alcohol is a CNS depressant. Common prescription medications to treat social anxiety disorder include antidepressants such as Paxil or tranquilizers like Xanax, and they (especially the SSRIs) work in an entirely different way.
2. The best way to treat social anxiety is by going to a cognitive-behavioral therapist - it helps improve symptoms in up to 75% of people suffering from SAD, according to the http://www.mayoclinic.com/health/seasonal-affective-disorder/DS00195.
I can tell this has some personal meaning to you, so just know my intent wasn't and isn't to rile you up. I don't think defending my view would do much good, but hopefully you can see the merit in an honest outlook that isn't just sympathetic.
Honest, yes, but also a misleading viewpoint. Like many other mental illnesses, people seem to assume that people suffering from SAD / mental illness need to do is "buck up" or "get ahold of themselves."
The funny thing about that line of thinking is that if people were actually rational actors, it would work. The problem is that people
aren't rational beings and don't act rationally. Mental illness needs to be examined from all angles - social, neurological, developmental, personality, etc - and simply saying "oh, they aren't putting in enough effort" is avoiding the bigger picture (and disrespectful to boot). No one (well, very few) actually want to suffer from some mental illness. They may possess learned behavior that psychologically holds them in a particular state, but that's the point of psychotherapy - to have someone help you with your problems who is distant from the psychological effects of those problems.