Captain Obvious: Yes people it is quite possible to get your wife out without burning your entire family down.
Congrats to you and your wife! Your story is indeed encouraging in regard to what is possible.
However, and this is more for others that may be reading your post, it is essential to keep in mind that what is possible is not the same as a guarantee.
I know several ex-JWs that followed almost the identical strategy as you and their spouses (mostly wives) are still die-hard JWs that have no intention of ever leaving the religion. Some have stuck with their mates, although they live together their relationships are fairly superficial because they cannot discuss so many subjects. Others have ultimately separated and/or divorced because they could no longer stand to live with someone that would not support them being themself and living an authentic life.
Captain Obvious: Be who you were meant to be. Anyone who doesn't want that for you doesn’t deserve to be in your life.
^^^ THIS ^^^