I know that this was his own work King. Thats the point. If it was not purchased or optioned(or whatever) by Mongoose then he's free to provide it to us in the same way that another, previously mentioned, author has.
Some people might ask,why would he?
Well, when Herve said he had run(and enjoyed) a Conan adventure that I wrote and posted on that particular forum, I was absolutely delighted. If I had an entire campaign background ready and even one other person used it, I would not deem it to have been a waste of my time and talent even if I didn't wind up getting paid for the work.