Alcohol definitely opens me up a lot more than normal.... and if it isn't too much, it feels like how I am on the rare times that I'm actually comfortable with someone. I enjoy being able to have that. At the same time, it doesn't take much before I am at the stage where the next day I'll be going "OMG WHY DID I SAY/DO THAT!" Very, very, slim margin.

As to drugs.... no dice for me. Not risking that!

Have you gotten up the courage to see a psychiatrist yet? I can't imagine the struggle of feeling like you're stuck with Schizophrenia (you do mean schizophrenia and not schizoid PD?) along with AvPD. I've got laden with bipolar 2, and a crap ton of AvPD tendencies (not diagnosed with AvPD as well.... I refuse to talk to the pdoc even though my counsellor keeps trying to get me too.....) But, I do take medication for the bipolar as it isn't a PD - PDs are often very hard to treat with medication, but bipolar is a mood disorder. The same is true for Schizophrenia - there is medication that can help you -so drugs that are beneficial.