yeah, your hubby could attend, and send your regards. Unless you're friendly with the boss's family, that is. Then I'd probably try to make an effort to attend. It's not an easy thing to be around--I empathize with you.
Speaking as one who has been to quite a few brisim, you could do what I do...eat the lox and bagels, make an appearance, give well wishes, mazal tov to the mother, hang out for the Hebrew prayers (there are lots) then step out of the building at the appropriate time if you need to. But it may not be as awful as you're expecting. Some babies hardly make a peep, and others, well, they do cry mightily. The trained hands of a Mohel (who may do several brisim per day) are much more skilled than most doctors. They apprentice with an older mohel for years. The actual preparation and slicing of the foreskin takes less than a minute, and the baby usually calms down in another 3 or 4 minutes.
It may not sound like it, but I'm conflicted about this, too. I'm speaking as someone raised AP, brother is uncut, etc. When I converted to Judaism (orthodox) I had to come to terms with the idea that circumcism, for Jews is a very special thing (I would never want a non-Jewish baby boy to have to be circumcised, of course). Even if most people on MDC don't believe this, to the Jews, the bris is a meaningful and important mitzvah (commandment) that they need to fulfill to be in keeping with Jewish tradition and Jewish law. It's the physical sign of the covenant between G-d and the Jews. Jewish men are reminded, their whole lives, that their whole selves, indeed their most private parts are consecrated to G-d: to goodness, procreation and to love (not to selfishness, or rape, or perversions or even to pure lust). Sorry to have expanded the topic a bit (a lot...) but I hope it's helpful to try to think of it from this point of view.