Tom -
I could have sworn it was RTJ (when I was there), but a bit of Googling comes up with David Fleming....
Not sure it is still open. I thought that the resort was getting renovated 2-3 years back but never heard.
I did know that the 2000 acre property was owned by a Mexican billionaire whose house can be seen from the water at the resort. (Think: James Bond villain's tropical fortress. I actually have some pictures of it.)
I enjoyed the course. Tight FWs through the jungle, 3-4 cool seaside holes, and not a soul around.
Cheers,
Ian