That all sounds good but also a little intense. It's hard not to read things into cards at this point, I'm sure. Sounds like you are going to have to work overtime to remind yourself of baby steps and where you were and how far you've come or the high horse resentment will get you. Dumping obviously isn't the only way to stop fighting, so that would bug me too to hear someone on a high horse about something that had injured me. On the other hand, if you validate it and let it go will he stop rubbing it in your face eventually if you ask him to somehow without accusing him of it? If that makes sense.
