Yup, I just watched it happen on the webcam too. Twice in less than 15 minutes. They see someone jump in and then they swim after them and direct them to the cave. They weren't by the ladder, but on the other side.
If I was with someone that had jumped I would be worried sick if I didn't see them come up the ladder right away.
I wonder if Rick's knows all of the bad publicity they are getting due to this. Do you think they follow Negril.com or TA?