It would do nothing good for your situation except maybe earn you a visit from the elders. But it would do wonders for bolstering the dubs attitue that they really were being directed by holy spirit. If you were truly sincere you would already know that you needed to go and bore yourself to death at the weekly meetings.
The truth of the matter is the dubs would have taken away your family regardless.
If they became wittneses and other family members didn't they still would have cut off most association with the non-believers.
At least that is what my parents did, we had the obligitory visits to their parents house on occasion but not much else.
I do know of one person who took up smoking then got reinstated just to prove that holy spirit had nothing to do with it.