Sab's right. They do treat child rape as sin, rather than crime. I think probably that it's more to do with the fact that they are sitting on a big, fat hefty file full of names of paedophiles in the congregations. They're like the little Dutch boy with his finger in the hole in the dam. If they accede to the fact that they were wrong about their policies, will they be engulfed by historical cases of abuse, based on old misguided thinking about 2 witnesses etc?
Also, that file of names that's been mentioned. (20,000 or so?) Does anybody even know whether it's a list of total sexual paedophiles in the congregations based on allegations? or rather, a list of brothers that the Watchtower considers to be sexual predators? If so, the actual list could be much bigger.