I don't think there is any standard procedure anywhere in the Church anymore. It is a hey-you org board, and only one guy really gets to say hey you. And that fellow has got some serious issues brewing. I wasn't on that logistical level when I was there but I imagine it goes something like this:
a) Study the poster's pattern, put a profile together and keep adding to it till you get a picture of what orgs he was at, what case level he is, when he likely was there.
b) Get trolls in touch through chat rooms and the like to learn more.
c) Run the profile by Ethics Officers and files and narrow down the identity.
d) Figure out any connections that might be important to the person who value their good standing with the Church.
e) Have the connections approach the fellow and persuade him to knock off the posting.
f) If "d" fails, or if it is not an ex Scnst, get trolls to try to drive the fellow into apathy and off the boards.
) If the person is a real pain in the ass, get some PI's onto him and see whether you can't get some discreditable dirt on him or intimidate
him into silence.
Incidentally, trolls love to cause conflict among posters. Interesting fact, 25% of the documentation that Miscavige dumped on the Times to discredit me were posts by avowed anti-Scientologists dumping on me. That's right, right up there with the confessionals were a stack of posts off ESMB, OCMB, and ARS saying what a criminal Marty is. Boy that Sitting Bull article on Scientology-cult.com was prophetic, eh?
For guys who do more than simply criticize on message boards, like myself, things get a lot rougher. But, that is for another day.
Quite frankly that OSA NW is a joke now. Miscavige has blown off the only folk who could ever get it to work. Which leads me to the original disclaimer, who knows what the chaos behind the pretty walls might do at this point. Just take another listen to the Tommy Davis melt down on the SP Times webpage. He is channeling Miscavige there. It was unfiltered Miscavige. With nobody left to buffer Miscavige's insanity to the outside world and staff where this puppy goes is anybody's guess.
Sorry if you were looking for more certainty. That is as honest an assessment as I can deliver.