Have you thought about having a family study night where you just read the Bible? Next time your wife starts in on you, tell her that maybe she's right. Tell your wife that you feel lost, want to "regain your faith", and want to study the Bible as a family- and just the Bible.
Start in the beginning of the New Testament. Others on the board have said that studying just the Bible helped them and their families realize that the Society does not follow what the Bible says.
This may also smooth things over with your wife, since you'll be showing interest in spiritual matters and acting as head of the household by "providing spiritual nourishment".
Edited to add: That last bit almost made me gag as I was typing it.