how bizarre that they would do that in your field. must have took a wee while. i imagine it would be a bit of a shock for you to find the remains
I'd never sorted out anything bigger than a big hare till I shot & prepped a goat.
It took me about 6 minutes to unzip & gut a large merino goat which was a bit bigger than a sheep . That time also included removing the head still inside the jacket and rolling it up . The guts were used for sausage skins so dropped into a big plastic bag and carried away for processing later on .
There was less than a pint of blood on the ground where I'd bled him by slicing in through his heart ,. it wasn't messy in the slightest.
He was is suspended from tree , so using a length of 3x3 wood placed across the back door & roof of a transit type van with rope & using a couple of bits of 10 mm board as the carcass/leg spreaders would make it much easier .