Just some random thoughts -
"Should they advise me to d/a?" - hell No! , by their own beliefs they are asking you to walk into the mouth of Gehenna. Sorry if that sounds dramatic, but if one really believes that outsiders are damned, why ask you to do it?
" to do the right thing as a Ministerial Servant" - what about the right thing as a father and grand daddy? Is he saying that his "Congregation privilege" is more important than his family?
Do they really understand that to be d/a'd is the same as being d/f'd and that they will be ordered to shun you if you do it.
I know that some take this route to be free of the Borg, but I say, No way!, make them come and get me if they ever want to and I will string it out and waste as much of their time as possible