I deprogrammed one of my students.
They were very zealous/enthusiastic over what they were learning, coming to meetings, prestudying, etc, etc. They were not ready for baptism at the time I learnt TTATT, but I'm pretty sure they would have gone all the way.
I did it the semi-direct way. They trusted me and I decided to trust them, because I knew if what I told them got back to the congregation, then I would be in big trouble.
I turned up for our study (made sure I went alone). I showed my discomfort (it was hard to start talking) and explained that I had to speak to them, but that what I was going to tell them could create some extremely big problems for myself if certain people were to know about it. In that way I introduced the notion of disfellowshipping and to bring it home I explained that if their child (already a young adult) accepted this religion (as my study was always hoping they would) and then rejected it, they would no longer be permitted to speak to them. This opened their eyes as I could see their surprise and also they could also understand the risk I was taking in speaking to them.
I explained that I was going to present them with some information that it was only fair for them to know about before they made any big decisions. They would remain free in their choices but there were some serious things they needed to consider in making those choices. I used a recent article that had been published in the WT on the Bible's authenticity. It was one of those secondary articles we often skip over, but its' being recent made it a perfect excuse to use it as the basis for the study that day. It was full of so-called "evidence" for the Bible's authenticity and chronology. We studied it paragraph by paragraph. I got them to read each paragraph and then asked them what the facts were in each. Very soon they saw how the WT was stringing us along with their so-called facts, and I just made sure they were picking up on it all.
Having seen the unreliability of the chronology (thanks WT for the wonderful article) I then asked them to consider some other historic dates for different events in the Bible which together we then looked up on the internet (Wikipedia probably) to check what was happening in the world at those times (for the flood) and also the dates for Babylon (as we had recently studied this together before I'd woken up and I wanted to apologize for not checking the facts first).
I then asked them what the point was in checking these things. I explained that if your going to make a life decision on something, don't you want to be sure of the facts first. I used my example as they knew I had given up many, many things in life to pioneer and serve "God". I said that if you are to sacrifice so much don't you think you need to check the facts first. Having already checked the above things together I suggested that it was possible I had given up my education, among other things, for nothing (knowing that education was very important for them).
At the end I reexplained why I felt the necessity of speaking to them even though I was taking a great personal risk in doing so. I left it open for them to decide what they wanted to do and also to do draw their own conclusions. I only showed them the facts, never stating the WT was wrong, always emphasizing the importance of checking things and that there can be serious consequences if we don't.
Unfortunately I never saw them after that, but they never came to another meeting while I was still attending and I have good reasons to believe that they still haven't gone back.
After that I tried studying the same WT article with my other studies. One was unable to see through the borg reasoning, and being pressed for time on that occasion it was impossible to go further. While they enjoyed studying, they were too wrapped up in other things to take things further (unlike the above study) so since then I have kept contact with them. We call each other up regularly just to catch up. I may get round to explaining things further, if necessary, but I'm not sure they would know how to be discreet if they bumped into local dubs.
In any case, while all my studies really enjoyed their studies and some were progressing, I made sure none of them continued their study, always covered for them when dubs who knew them asked how they were, and as far as possible, have also kept in touch with them.
