He will not stop posting, he should be banned. Any moderator who see's the constant harassment of the members of the forum should see it as non-supportive and ban this person.
What we need is a new moderator who understands the rules of support, the seriousness of the issue at hand, and is able to remove themselves from personal opinions relating to their own cleansing issues - at the same time be open to new ideas, while keeping peace among members.
It seems the only time this forum has issues is from those making fun or saying that parasites do not really exist or the problem is exaggerated.
Any volunteers? I would myself, but my time is limited. All that is needed is a group to write to the Webmaster and point out what is taking place here. I'm sure he understands the seriousness of the issue and that constant bantering is not supportive.