Well duh! "Tree elders" are sent by the "Branch" - obviously.
@Closer
There is a difference between legally married (in jw land) and scripturally married.
You can get a legal divorce but if you remarry (legally) without "scriptural" grounds for a divorce then you have entered into an "adulterous marriage" and if they can get their ducks in a row (proof - admission by you or two witnesses or it is known you are living with your new marriage mate) they will hold a JC and DF you.
"Scriptural" grounds means that either...
A) Your ex had definitely done "jiggy-jiggy" with someone - or an animal! (porneia is the word they use which means penetrative or oral sex or mutual masturbation) and you have chosen not to "forgive". ("Forgiving" means you have resumed jiggy-jiggy with him or her)
B) You have done the dirty and your ex chose to "not forgive you" and scripturally and legally divorce you first.
Oh and with modern technology- phone sex, sexting, robot sex (!) etc. this will have them spending hours or days consulting with the branch to decide what or if you have "grounds" or not! Probably not.
But no Pharisees at work here. No Sir!