Gday WingCommander,
There are over 700 independant SDA ministries. These are ministries that SDAs support theologically and with their funds so you could be right.
In my experience I have never seen Shunning used.
Elders of churches are elected by the members to run the church but they don't have judicial meetings. The pastor is the paid clergy. The elders can refuse to have a pastor preach if they don't like his theology I have seen that done in some churches
My wife was never an SDA and she used to call me a Davidian and that really made me mad.
Now we go to the Anglican church she has nearly forgotten that insult.