My wife's a doctor and she quite often works 24 hour shifts. She doesn't enjoy it but it's a condition of the job and she has accepted it.
These ground staff do not deserve to have a job to come back to tomorrow morning. If I was the management I'd seriously consider getting rid of them. There are plenty of people who would take their jobs.
Praise must go to the cabin crew, pilots and management who are left to clear up the mess that has been caused by this ridiculous episode.