To be honest, I would be surprised with a layoff this long if the crewmembers were kept on salary. They may get a paid ticket home, but I doubt they will continue to get full payment like they would get if they were working full time.
These are contract employees, and when you aree not on a regular work schedule you are at the whims of the demand of thre workplace.
It would have been different if it was just a week they had off, but this is close to two months with no revenue from that ship. But, I would think every crewmember would have a fresh contract waiting for him (not just the balance of what he had left) waiting for him when the ship resumes, because they are getting almost a regular full 2-month vacation.