If in future elders come around and tell them to knock it off and resume shunning in full then I think they’ll have some difficulty because, as they see it, they have written permission in black and white in the WT itself to stop shunning.
Sure. I'm sure elders will have no trouble showing these sisters how their reading is, in fact, not quite accurate - especially in light of that particular situation. You know, "the GB meant someone like this, but the person you love is waaayy worse because of... reasons"
The options are endless.