From JW.org
http://www.jw.org/en/jehovahs-witnesses/faq/shunning/
"Those who were baptized as Jehovah’s Witnesses but no longer preach to others, perhaps even drifting away from association with fellow believers, are not shunned. In fact, we reach out to them and try to rekindle their spiritual interest."
Compare that statement above with their mandated instructions to witnesses to shun their family below.
November 15, 2014 simplified edition "we must be holy in all our conduct"
5 At Leviticus 10:1-11, we read about a situation that caused Aaron’s family extreme pain. Jehovah sent fire from heaven to destroy Aaron’s sons Nadab and Abihu. God then told Aaron and his family that they could not show their grief in any way. What a test of faith! Are you proving yourself holy by not associating with family members or others who are disfellowshipped?—Read 1 Corinthians 5:11.