Pretty sure the consensus is that WBC posted the FIRST letter to AnonNews.org, just so they could bait Anon into DDoS'ing their site so they could have IP's to sue. There was a third letter on AnonNews.org telling other Anons NOT to DDoS the site. I'll find the links to both letters.
EDIT: Also Marts, the WBC isn't really a church. It's ONE family. One family that are all lawyers, and they hold the protests in hopes of pissing people off JUST so they can sue them and get more money. That's it.
EDIT AGAIN:
First open letter on AnonNews:
http://anonnews.org/?p=press&a=item&i=449Second open letter on AnonNews:
http://anonnews.org/?p=press&a=item&i=494