Not to be contentious, but why not leave them there? The accounts say that the bodies are in a remote corner of the ship, and therefore unlikely to be encountered by other divers.
In this case, obviously, the divers did not provide for an optional burial at sea, and therefore there is really no choice. But, if waivers addressed this issue in the future, then wouldn't it be acceptable to simply leave divers if that is the risk they agreed to take and wait for their remains to eventually, if ever, surface?
It is a tough ethical question, but an important one for the fiercely independent among us to address.