You knew this day was coming. You're right about the announcement, it sounds the same either way. I sent letters out to all of my friends and family before my df'ing announcement. I wanted them to know, in no specific terms, why I was going to be df'd. If questioning the org is equated to questioning god himself, oh well. You're on the losing end of the stick no matter what in that type of scenario.
Over the last year and a half since my df'ing, I'm surprised at the fact that I haven't missed my good friends as much as I thought I would. Sure, they are always in the back of my mind, but not speaking to them hasn't really fazed me. I think it helps tremendously to have another core group of good friends before leaving - it makes the transition easier.
You can always call me for any assistance you might need.