There is not much that can be done by or for the victims of a lobster attack and due to the lack of reported incidents it is extremly difficult to research ways to escape such an event. The only advantage that you have is the creature’s limited eyesight and somewhat lack of speed when traveling in large swarms. These creatures tend to attack moving objects… so staying as still as possible is not a bad solution. But I believe the lobsters will test objects within the swarm perimeter by grabbing them briefly. So a person would have to be able to maintain the illusion of inanimation while being prodded and grabbed by what could be a dozen or more lobsters (once again… depending on the swarm size). Be careful out there!