Anything you can do would help. If I had a goat thrown in my pasture, I'd figure out how to butcher it--NO loss.
I sincerely hope you can solve this soon. Too bad you can't move. I CAN burn, shoot and bury, and I'm on the edge of a tiny town.
The goats, sheep and pigs we usually get (three goats, two sheep and four pigs so far!) aren't all that bothersome, honestly. Quarantine for two weeks and add to the herd, or sell them off and make a few bucks. But, they don't cost much to feed and they're easy to sell if we don't want them!
We're actually looking to move soon, because of this and other issues with the property. Being near a major road, unable to bury/burn, etc. makes everything a real pain in the rear, plus our landlord's a bit... special, haha.
This will be something that will occur more frequently in the months ahead. More and more people are becoming strapped for cash and will be forced to abandon their animals. I wish you luck in finding this guy a new home or putting an end to his misery.
We're expecting it. We didn't expect a horse, but we did expect more goats. Now I'm getting a padlock like another poster suggested, haha.
As for an update, I have two people who may come out and look at him tonight or tomorrow. We're going to hold onto him until Monday, and see what our options are then. In the mean time, he's got food and water and seems content enough.