That servant seems to have been spared, but many others had their "bowels torn asunder" by the eels. And that's just one of the many horrific ways the ancient Romans devised to kill those who displeased or offended them, from crucifixions and feeding people to wild beasts, to setting slaves on fire, and assassinating Julius Caesar on the Ides of March. Historian Emma Southon covers them all in her wittily irreverent new book, A Fatal Thing Happened on the Way to the Forum: Murder in Ancient Rome, showing us how the people of ancient Rome viewed life, death, and what it means to be human.
I guess they were fun-loving folks, in their own way.
But then, death-spectacles were sort of a way of life, in those days.