Yes, Looked at your photos and these are indeed the Hy6droid Shrimp, Rapipontonia galena,
that I was referring to that you might also find on these type of hydroids in the Caribbean as well!! They are much larger than the Skeleton Shrimp. which probably look like the unfocused blob areas your referring to. Something to look forward to next dive trip then.. Yes, you'll need to add a good diopter for these guys, they are teeny tiny..Tim has a bit of an advantage as those in Indo although still small, are some what larger than those we find in Cayman, etc..
Do you dive with AKR by chance while on Roatan? I have a very good friend who works there who excels at macro hunting..