The link that you posted above, Jon.

There are lines off of the portside -- maybe leading to the prop.

https://www.facebook.com/SeaTowVirginIslands/photos/pb.133207160041942.-2207520000.1417191247./952551971440786/?type=3&permPage=1 (If you click on the and buttons on the top right of the picture, you can page through the images.)

If they did get their prop and/or rudders fouled with some errant line, seems to me that either sail with the sails (maybe easier said than done with the IP in that swell if they had the rudder tied-up); or put the sails away and use the tender with that big outboard to keep clear of the rocks?

In the armchair sense of the world, seems like there are a lot of potential "lessons" to mull through -- especially without being confused by any facts or phased by adjacent rocks. ;^)))