Yes! Disengage! In my relationship, more often than not whatever it was comes up once in that moment and then its over.
For example, we have an unspoken divide of house chores....his domain is bathroom, I have the kitchen, and we share the living room and bedroom. Now we both still wipe up each others areas (I'll do a quick wipe up of the bathroom counter and toilet when I have friends over and it hasn't been cleaned recently enough).
So, towards the end of his longest isolation to date (at least longest with me) he hadn't cleaned in a LOOOONG time. I hadn't either because I was elbow deep in self care and keeping the rest of the house livable, feeding us, and the dog etc (I hate bathroom cleaning....its always last on my cleaning days....and therefore never gets done...and therefore always first on his cleaning days).
I hadn't been engaging him because of his isolation. I was in the kitchen doing whatever and he comes in to talk to me. He laughed at a joke he made....I had to stop myself from crying because I hadn't heard him laugh in so long and it felt so good to talk.
The end of the short conversation was much less pleasant. He said his friend wanted to come over the other day while I was working and couldn't because the bathroom was dirty (like...disgusting kind of dirty). He gave me this whole song and dance about how he's not really social and so having to turn down a social opportunity wasn't in his best interest. And ultimately, in a very stern voice, (he never yells at me) he told me that the state of the bathroom was completely unacceptable and that I can never let it happen again so his friends can come over whenever they want. Like I'm the only one using the bathroom and the only one capable of cleaning it.
Sooooo....was I pissed? Abso-f*cking-lutely. Could he have told his friend to come over in an hour so he could clean before he got there? Yes. Could he have hung out at friends house instead? Yes. Could they have met somewhere neutral? Yes. Is it MY fault the bathroom was dirty? No. Is he incapable of cleaning? No.
But would pointing ANY of these things out to him in that moment do anything productive? Nope. In that moment is gonna be anybody's fault but my own? Nope.
Instead I said something vague like "yes its dirty" or "oh bummer you didn't get to see him" and then took the dog on a walk. It never came up again. I never cleaned it. And I'm sure it will get dirtier than usual on his next extended isolation period.
*shrug* Sometimes thats just how it goes. Just remember when its a ridiculous accusation.....its not you. Sometimes its hard to know what battles to pick. I usually go for the ones that come up more than once and I have a strong position one way or another. I let the other stuff go. And as the youngest child in my family with a sibling with a VERY strong personality.....it comes much more easily to me than it would for others.
Now, if I feel disrespected that's different. I bring those things up later. But that's only happened once and he admitted he went about it in the wrong way and used certain words in the moment....and that wasnt how he actually felt. And as soon as I brought it up he knew exactly what I was going to say.