I recently went through a manic episode that lasted about a month before I got medicated. During that time I had a professional situation that involved discussion of a topical issue in our society. Well, I lost it. I was FURIOUSLY disagreeing with the rest of the group (I'm sorry I'm being a bit vague here; occasionally I know IRL a couple of people on PC and I don't want to get too specific). I mean, I was an inch short of throwing a chair because I was feeling my rage
so intensely.
I left that situation in a rage...but now I'm embarrassed and ashamed (now that I'm on a med that keeps me from being manic).
All we can do is carry on and let time put a distance between the embarrassing event and "now". Hold your head up, smile, and take a few good, deep breaths.
It'll be okay