Some of you, whose obviousness is not worth naming, show how little you know either the culture or the psychology of Jehovah's Witnesses with your comments in this thread, not to mention the post' originator.
It is true that anything (almost true at least) is possible, but is is highly unlikely that a JW would have anything to do with the church burnings. As for a radical element (no doubt after the cliche "some bad youths") of JWs, that is just silliness. If there were some such JWs or ex-JWs upset to this point and willing to act, they would be more likely to burn down Kingdom Halls.
You really don't understand JWs at all and really just show your bigotry if you think JWs are the ones burning the churches.
My vote is for a single Ted Kaczynski-type or some other person with a political agenda. Or possibly a fire-fighter that was facing pay-cuts or lay-offs.
-Eduardo