I've got to agree with sir82 on this. It doesn't make any sense that the Society would send out letters ordering elders to get on computers (which they shouldn't have to begin with) and ferret out apostates. If an elder actually did this, and maybe started reading and thinking a little bit, then that would be the first step toward becoming an apostate himself. Does the Society want to take a chance on losing even one elder that way? I doubt it. However, as Wednesday pointed out, I wouldn't doubt for a second that individual zealots in the local congregations might take it upon themselves to do a little house cleaning, in a strictly "not official" way. That's certainly possible. But the Society? I don't see it happening. Of course, the easiest way to prove it would be to produce that letter. A scan would be great. If I could see a scan of it, I would believe it. Otherwise, it sounds to me like a bunch of gossip-mongering, which, as we all know, the JW's have perfected into an art form.
David