Bribing
You can also mix in some ground beef--just a small amount--then some warm water, then mix in dry food. No snacks or treats during the day, and NO people food. See how that works.
Good Luck,
AIHL
There May Be Hope
Have the owner contact the local television stations if he does not get any satisfaction from the courts. Many stations have "On You Side" segments.
Also have the owner contact the American Dog Owners' Association. They will offer him useful information and suggestions...