I would just like to quote this bit from Paul Grundy's lengthy but excellent article on JWFacts.com on disfellowshipping.
"There should always be clear Scriptural reason for disfellowshipping, and John reprimanded Diotrephes for attempting to throw people out of the congregation unnecessarily at 3 John 9-10.
Bible discussion of shunning by Paul and John is limited to just the following areas; Fornication, Greed, idolatry, Revilers, Practicing Drunkenness, Extortion and One who does not remain in the teaching of the Christ. Revelation 21:8 does not relate to shunning but at a stretch could be drawn on, and adds adultery, men kept for unnatural purposes, men who lie with men, thieves, cowards, those without faith, those disgusting in their filth, murderers, spiritism, and liars. This list should be the full extent of reasons for which to be disfellowshipped."
This list should be the full extent of reasons for which to be disfellowshipped. That last phrase is so very telling, without some complex eisegesis there is no way that anyone could be DF'd for simply disagreeing with the words of men said or written since the Bible times.
To make a charge of Apostasy stick, and notice, the word does not appear in the list, to make it stick they would have to twist not "remaining in the teaching of the Christ" and or "without faith".
Which is exactly what they do of course, if you do not remain in the teaching of the Writing Committee of the WT and do not have faith that the WT is God's organization then in their mind you fit the criteria.
But an honest person would say that nowhere in scripture are we asked to stick with the everchanging teachings of those men, and nowhere in scripture are we asked to even be in an organization, let alone be "loyal" to it.
A disfellowshipping for Apostasy like the above is in no way scriptural, and shunning is simply wrong on all levels.