PIMO , as i said I`m going out on a limb here and I might upset some people ,but I really don`t think this is a real strategy that works and doesn`t help the person who is still in.
While you may be doing this to keep the peace in the household and keep relations somewhat stable in the family arrangement ,it`s not helping the person who is still under the control of WT/GB to break free from it ,and isn`t that what you would really like to happen ?
And are their children involved as well ? That`s another issue ,the longer they are subject to this control the harder it will be for them to disengage get free.
Maybe you should re-evaluate what you could do more to help your partner / spouse or whatever to free themselves from this bondage they have involved themselves in.
[ Of course their may be others who are quite happy to have their partners/mates under the control of the WT/GB. for their own selfish ends ]