Trying to Demesticate them doesn't always work. I has lost my cat. But I found him 2 years later(next street over-A women has fed him all this time)I figured I would catch him and it would be alright. SO I caught him and kept him a large dog crate. He was terrified and mean. over time I could touch him but I could tell that he hated being in the house. I kept him for 4 months and he never got any nicer so I let him go. He ran right back to that ladies house and he is still there till this day.

The point I am trying to make is that sometimes they are just happier being free. Like with my cat I could tell that I was hurting him rather then helping him. You could try to help him but it doesn't always work.