Sorry that you've had to experience that. Yes, there are 'slob' hunters and no, they (or anyone else for that matter) should not be on your property without your consent.
The only way to retrieve a game animal when the property owner denies permission is to contact the DNR. The warden will take possession of said animal and the 'hunter' will have right of first refusal to purchase the animal. That is my understanding anyway. Things may have changed. Maybe MJC135 can ask C244 how that would work.
When you wish upon a falling star, your dreams can come true. Unless it's really a meteorite hurtling to the Earth which will destroy all life. Then you're pretty much hosed no matter what you wish for. Unless it's death by meteor.