Thanks, Teetime and janea!
Just skimmed through, will read closer later. But I can say, for now, that dh and I already do many of these, a few others would work for us and a few, absolutely not! For example, sometimes I need "space" from an argument. If I stay with it, "gentle" or not, it starts to deteriorate. Taking some time out, gives us both a chance to calm down and maybe come up with solutions.
"Heal" dh? I don't think Iv ever done or said anything that harmful and vv. Also, sometimes, dh doesn't want to be "healed/" feel better/calm down right away. He needs to sort of process his anger on his own if that makes any sense.
But, overall, good advice, imo.