"Hi DT ,can you explain these points ?
"The Governing Body could face some serious legal challenges if they ever tried to punish those who never joined their coup. A religion doesn't have the right to punish nonmembers. The Mormons have gotten into trouble for this very thing, so there is a precedent.
There is one very useful thing that this rival group could accomplish. They could process letters of disassociation. I would recommend that they keep the identities of those who disassociate private, but they could send them a letter saying that the request has been approved. This letter could be used to threaten legal action against any elders who represent the Governing Body and try to punish them in any way, including an announcement that is intended to get the congregation to shun them.""
Here is some information on the Mormon precedent.
http://www.mormonnomore.com/legal-precedent
That same website says, "Legally you can submit your resignation to any representative of the church". Assuming this is true, it should be valid to send a letter of resignation to a group of anointed Witnesses who are maintaining the traditions of JW's rather than the Governing Body or those who support them in their coup.