I've seen this happen many times. People who after leaving, feel completely adrift and simply cannot handle setting their own path in life.
Incredibly, this even happens when people spend too much time in prison. They become confortable with living there and after being released are completely unable to cope with life outside, and end up comitting a crime just to go back to something they feel confortable with.
In this case, i think living a lie is a high price to pay for a few friends and a sense of belonging. As others have said here, you can get these same things in another church whether from another denomination or non-denominational, and the control over your life and thoughts will be minimal. Why not give this a shot?
My guess is that you will never fully fit in if you go back. Sitting in a meeting rolling your eyes as you listen to things which you know are not true, only to be able to chit chat people at the end and perhaps go to dinner with them is hardly worth it.
By the way..."the truth a la carte".. love it. I'll remember that.