I think AJM said it well. My H seems to have some moments of clarity like this too, but his actions are still those of someone confused and not ready to turn their journey in a different direction yet.
Like you, it gives me hope that at some level he is beginning to understand that the fantasy/escape is not bringing the lasting happiness they expected it to. But that doesn't mean they won't keep trying at it for awhile longer "just to be sure."
me-35 WAS-37 T-16 1/2 Son-14 (HF Aspergers) BD,ILYBINILWY,"I met my soulmate": Oct5,2013 "Letting go because I love him, holding on because I love him."