You think it will be simple don't you. Attend to sheep, unhook horn from wire fence. Set sheep free.
reality: attend sheep. Get foot stood on by sheep panicking because you have approached it.
Sheep is now even more tangled than it was before.
Try to unhook from wire fence, get fingers nipped between horn and fence.
Wrestle with sheep and fence for a bit. Lose. Realise neither wire fence or sheep intend to budge.
Slip in sheep shit whilst realising this.
decide to give up and go back for back up/wire cutters . Realise the sheep has also given up and if you walk away now it probably intends to hang itself between the fence and the fence strainer post.
cry.
remember you have a phone and ring for help. No one answers.
Kick the quad bike tyre.
drive quad bike back and find some one who can help you .
get laughed at because you need help getting a sheep unstuck from wire.
re-attend sheep with back up.
sheep has freed itself and left the vicinity of the fence area. Get told you are a numpty.
or
sheep has died just to spite you for having the audacity to try and help it. Get told you are a numpty.