Hey man. This happens to me sometimes too. It used to happen a lot more, and I'll tell you what was going on in my head and how I fixed it. If what's going on in my head isn't the same thing that's going on in your head then I don't think my way of fixing it will work, so I'll put a couple fixes on here to try and help you out.
Normally in my head, I notice that I do worse while conversating when I'm thinking too much on the actual quality of the conversation, and more particularily my contribution to the quality of the conversation. I realized the best way to fix this is to concentrate on portraying a certain feeling instead of concentrating on introducing awesome topics or making awesome topics awesomer. In my case I just think to myself "What's the positive thing to say here?", and I blurt out my answer. Seems to work.
Now if that doesn't help you, your problem probably lies with you being out of state. Here's a couple fixes for that.
1) Just scream to yourself before you meet up with your friends. Like, YAHOOO! For added effect stomp your feet like your having a temper tantrum.
2) You said things were going in slow motion. Well concentrate, and this is going to sound wierd, and see if you can perceive things even slower. For instance, watch somebody that is moving, and see if you can "see" them moving slower.
3) Concentrate on your breathing, and just feel what parts your breath is going to until you feel chill.
Most importantly just feel relaxed (easier said then done). None of the people that you meet should make you feel uncomfortable, afterall your alpha
