Been thinking about this thread and the ups and downs over the past three to four years when my wife decided to go back into the witnesses.
I agree with most of the posters on these main points:
- Read Steven Hassan's books Combatting Cult Mind Control and Releasing the Bonds.
- Learn as much as you can about this religion, if for no other reason than to see for yourself how it is NOT the truth.
- Give your spouse space as this will need to run its course.
Obviously, as others pointed out, he is looking for something that he feels is missing in his life. That was my wife when she went running back to the Watchtower. In spite of what society and especially religion sells us, a marraige partner cannot totally fulfill your every need. If yours was anything like our marriage, there were a lot of rough patches that made both of us wonder what is so good about being married.
While people are different the best way I've found to combat this is to show the freedom I have that my wife cannot possibly attain in the religion. She recognizes that her friends in the 'truth' are conditional, that her mom (while truly dedicated to her religion) would do better to live her own life and not be so quick to 'sing like a song bird' to the elders because her cousin is seeing a non-witness, and that she cannot truly express how she feels about some of their strict rules openly to other witnesses.
The fact that your husband is still doing celebrations with you shows that he is truly not a witness in a strict sense. Use that to your advantage by practicing and talking about those things openly. My wife has an advantage that your husband will not have, if she is caught doing something like celebrating any holidays she can hide behind my headship by claiming that I made her do it. In fact, I encourage her to do that and would defend her on those grounds should she ever get called on the carpet by the elders for it. Having a copy of the 'super secret' elder's manual gives me an ace in the hole should anyone in my household get called out by the elders. I respect my wife's right to wanting to associate with them even if I do not agree with everything they do.