Richie
Fingers crossed, the odds of finding any kind of remains is pretty remote, the organic matter would most likely have been consumed by sea critters of all kinds, small and large.
Most archaeological sites have the potential for remains, and that usually does not stop the process unless there is some cultural or other reason that dictates the work should not go forward. In this case, I don't think that scenario will apply, so if any remains are found, they will be recovered and examined in the context of the archaeological science. After that, they would be re-interred, so to speak, with the properly due respect just as the other graves we've excavated on Niku have been treated.
I hope that helps.
Andrew