The thing is with drinking- it's fun in a big group or a couple of girlfriends, but when out with a strange guy on your own, it just leaves you less able to get out of the situations you are in, plus you don't have a lovely friend there to rescue you. I always asked my female friends to text me after a blind date, to know they were ok (even if it was to text, 'back at his, see you tomorrow' and then text the next morning).
Also, it sounds like when you drink, it is bringing up a lot of emotions. That coupled with coming off the AD's was just a bad combination.
Look, chalk it up to experience, perhaps think about whether coming off the ADs is right for you- it may be if you don't drink too much/put yourself out of your comfort zone for a few weeks, it may be you would be better off back on them.
You are better- you felt better 90% of the time. Then you had a wobble, but everyone has down days and bad experiences, that's a hint to you that you need to be very kind to yourself, you are better but still recovering.
As for meeting up with guys, if you like this one you had a coffee with, go and don't drink or have one. And text a friend when you get back home safely. And, if he's a knobber and says things like this guy did, just make an excuse you've got a headache and go home.
Perhaps even stop dating for a while to recover, it's tough out there.