FM,
I understand exactly what you're going through. I was in the same position for awhile. Pirata's advice was pretty much how I handled it. I also played word games as Miz does and no one seemed to notice. I'm still on the TMS and now only give talks about 3 times a year as opposed to one part a week when I was an elder. Even then, I had a part from the Reasoning book about whether JWs think they have the true religion. So, I spoke in the third person because quite frankly, they do believe they are the true religion. I just couldn't say we because I most certainly do not think that way (anymore).
Prayers were easier for me. I really tried to just focus "we appreciate your Word" as opposed "we appreciate your organization". I'd pray for everyone in the congregation to be strengthened which I meant, just not strengthened to continue doing the bidding of the WTS.
Sometimes I look out in to the audience at the blank faces and I just want to cry. I want to say, "I have doubts. Maybe you do too. It's OK. God isn't going to destroy us for it. Let's start talking about this stuff together."
If that could happen, things would certainly be much better. That's really a shame, isn't it?