"Discipline that Yields peaceable fruit"
http://www.watchtower.org/library/w/1988/4/15/article_01.htm
Notice the blatant abuse of context in saying that the 'no greeting' treatment to be given at 2 John 9-11 (persons bringing an anti-Christ teaching to your home) should be the same as 1 Cor 5 (persons who wilfully practice sins of the flesh). They are two totally different situations.
Notice the failure also to bring in other relevant scriptures that can shed light on the matter. This reveals the lack of intellectual rigour and consistency in their interprative approach. For instance, they fail to address the fact that the Greek word used by the apostle Paul for 'stop associating with' at 1 Cor 5 [sunanamignumi - 'to keep company with, to be intimate with'] is the same word used at 2 Thess 3:14,15, which the Society uses to support their 'marking' policy. Clearly, simply greeting someone and speaking to them cordially is not 'intimate association [sunanamignumi], therefore according to the apostle paul it is just as permissible to speak to a disfellowshipped person as it is to a 'marked' person. It is only 'eating' with them, ie, a more intimate association, that is prohibited.
And notice the gloating that they are somehow vindicated because the Supreme Court wasn't interested in even considering the claim brought by the aggrieved ex-JW, as if that makes it right in God's eyes.