I would not leave my dog on a tie out unless it was in the back yard...paranoia of retaliation. Maybe you are crazy paranoid but I would be, too.
I have been considering a tie out myself for when I do yard work. I know he'd rather be out there but ya can't trust him not to run off!
If it were me I'd probably check the shelters for incoming strays...more as an "i told ya so" if you found the dog than being nice to him. The dog was his responsibility and he can't call the cops on you without telling on himself for breaking leash laws.
I have been considering a tie out myself for when I do yard work. I know he'd rather be out there but ya can't trust him not to run off!
If it were me I'd probably check the shelters for incoming strays...more as an "i told ya so" if you found the dog than being nice to him. The dog was his responsibility and he can't call the cops on you without telling on himself for breaking leash laws.