As my Gran used to say: "Ignore it and it will soon go away..."
If all who have taken offence at what Joel has said over the months and years were to avoid the forum indefinitely (not just avoid posting but refuse to view the forum) then it would soon perish. There are but a handful of militant supporters, and as he admits himself there are only three (!) involved in his "school."
Everyone reaps what they sow eventually, thus I smile as I depart.