The organization encourages us to apply the bibles counsel in all matters and put Jehovah first. The counsel it gives in how to treat a disfellowshipped one is from the bible, not the organization.
The brothers stick to the bible and so should we because it is God who wants it done that way.
But what if the Bible doesn't say what the governing body want it to say? What if they are interpreting it wrong? Is Jehovah so very forgiving?