It took me almost a year to get back to being 'Comfortable' around people/crowds, especially in strange areas.
I hated going to a store and standing in line. Specifically, I hated listening to people complain about stupid **** while standing in line. It irritated me that they placed such importance on something that was so inconsequential.
It'll take time. Talking with the guys you were there with will help a lot, if you're not in touch with them, find someone who has been there and been through it also.
I work regularly with dudes who were there with me and we talk, but I like the anonymity of the Internet. No one knows me and I know no one so there's no reputations to uphold or egos to wrestle with.
I find the process of typing out my thoughts therapeutic. Some of these replies have taken an hour to write, edit, then re-write as I consider my words and re-evaluate my thoughts. I can't get that when shooting the **** over cold beer.