Wow! Incredible story. So glad you helped the Hallucinatin' Dave. Who knows what he would have done had he been left alone.
Please give an update on your gi condition. I am curious whether it goes away without treatment. I had a little Giardiasis issue last year (but only one "event"). After several weeks, I went to the doctor. Positive diagnosis, got the antibiotic, symptoms disappeared after a single dose. My problem was not nearly as bad as yours. Yours could be food poisoning... who knows.
Since you live close enough, you should be able to try again soon. Just remember, the mountain will always be there.