I also explode when I'm manic. Punching walls, hurting my hands...once I slapped my cat across the head when he was pestering me.
The thing about our fur babies is that they forgive us and still love us, even when we slip up. Your puppy is not going to be emotionally scarred by this and you shouldn't be either. It sounds more like a spanking that led to an accident. I mean, you didn't toss the dog into the wall or anything.
Forgive yourself. Your puppy does.