It's not really a flip-flop though; you have to read between the lines:
Awake! 84, Jun 8p. 28 - If raped, not guilty of fornication: “For the victim to be considered guilty of fornication, there would need to be proof of willing consent.”
In WT speak, not screaming IS proof of willing consent. Most of those "not guilty" quotes above don't really change their stance, they're just dodging it with their wording.