I just remembered this post from about 3 months ago: "They would Stone us if the law would allow"
by ElderEtta, where Paul Grundy (author of jwfacts.com) had dug up this gem of Watchtower:
"Being limited by the laws of the worldly nation in which we live and also by the laws of God through Jesus Christ, we can take action against apostates only to a certain extent, that is, consistent with both sets of laws. The law of the land and God's law through Christ forbid us to kill apostates, even though they be members of our own flesh-and-blood family relationship. However, God's law requires us to recognize their being disfellowshiped from his congregation, and this despite the fact that the law of the land in which we live requires us under some natural obligation to live with and have dealings with such apostates under the same roof. Satan's influence through the disfellowshiped member of the family will be to cause the other member or members of the family who are in the truth to join the disfellowshiped member in his course or in his position toward God's organization. To do this would be disastrous, and so the faithful family member must recognize and conform to the disfellowship order. How would or could this be done while living under the same roof or in personal, physical contact daily with the disfellowshiped? In this way: By refusing to have religious relationship with the disfellowshiped." Watchtower1952 Nov 15 p.703