I think the above quote is a bit extreme, although understandable given your upbringing.

Not everyone who throws things or hits a wall ends up a few months later hitting their spouse or putting them in hospital.

Some people just have a volatile temper and express it that way but would never dream of acting out that violence on another person.

However. That all said, his behaviour is unacceptable - PTSD or no PTSD.
Cowgirl, it sounds like you need to think more about how you feel about this, whether it's okay or not, and what the consequences are if he does it again.

You may well decide that it's not okay with you and the consequences are; he needs to see a therapist, he needs to do an anger management course or you leave or he leave for a night (or longer).

If you don't put your foot down and set some clear boundaries then there is a strong possibility that he will act out his anger in that way again, then apologise & so on as 2quilt described. It may not necessarily escalate but that pattern will most likely continue.

It's most likely not a pattern you would like to have in your relationship. Generally I find the best time to talk about these things is when the emotions have subsided & you are both feeling calmer.

Good luck.