I guess my 180 here was that I stayed really calm. I didn't over react, didn't hide away, and spoke assertively to Eldest this morning. I also was assertive with H last night and told him I was grateful he shared what was on his mind respectfully, but I wanted to leave it for now because I was tired and thought it was better spoken through with the therapist. He also started to play the victim a bit and I acknowledged that Eldest was very difficult at times, but that I didn't think H was fully aware of how he came across and that perhaps that was something we could discuss with the therapist. Usually he would rage at the idea that he might have something to change or address, but he just nodded at that and we left the topic still on cordial terms.
It was a 180 for me not to intervene when I heard a bit of conflict going on when I came home. And it was also a 180 for me to challenge Eldest on the fabrications about H - I've been more likely to let that slide in favour of picking my battles or keeping the peace in the past.