There could be some reason that would make sense and explain some of the behavior (not justify...but explain) but Cody hasn't given it to you.
I could understand, in the the heat of the moment, him being ramped up and getting upset with some of the stuff you mentioned... but him maintaining his anger is a bad sign. He should've apologized for getting upset and he should've explained what happened to you by now.
The fact that he hasn't done that much...is a horrible sign.
Honestly, while I can imagine scenarios where Cody isn't the complete villain in this story....those are a lot fewer than the scenarios where he is and his behavior since the fight only makes the bad ones more likely.
End it and move along. You shouldn't be with someone who gets into fights like that. That's bad enough. But it's even worse that he dumped his anger onto you (you definitely don't want someone who does that) and then stubbornly refuses to acknowledge your obvious concerns, how he fucked up an important night for you, etc.
Selfish, stubborn, violent behavior all topped off with low character.
All good reasons to end it and move on.