I'm glad I'm not an archaeologist. Finding old coins and rusty swords would be great, but finding something like this would be far less great.
A hole containing 2000-year-old headless bodies might be exciting to those who are interested in such things, and I fully appreciate the need to research if we are ever to find out anything, but it's too close to Burke and Hare territory for my liking.
There is a distinction between archaeological finds like this and digging up fresh corpses, but where is the line? How long do you have to be buried before 'respect for the dead' expires and you become fair game for a museum collection?
It's not a career I'd do well in. My first instinct would be 'It's a grave. Cover it up and leave it alone'.
You never know when they might get annoyed.