From what I remember the ratings for ATWT had gone down before Irna's return and she brought them back up (I might be wrong though) before things got really bad.
Dean Santoro (I know he wasn't supposed to be Ellen's biological child, but I still can't believe that he was supposed to be younger than Pat Bruder) seemed to blast the story and understand why Irna let him go, so I guess if he felt that way others might have too. It sounds like the story personally offended her and then add in her hostility towards Jane House and everything gets worse and worse. What other stories were going on at this time and what changes did she make to them?
I wonder if she had just lost all objectivity in her writing. I also wonder if the steep consequences she set up in the story with the Stewarts backfired on her with Kim/Bob, as it seemed like she had little interest in making Bob or Kim pay a price for their adultery.
It's funny because I HATED HATED HATED the "sympathetic adultery" story which was done on Ryan's Hope with Jill/Frank/Delia, yet I am fascinated by the Kim/Bob story and also by the other sympathetic adultery story she did with Edith Hughes and Ellen's father.