This is why you don't mess with crows, or better yet, why it pays off to have some feathered friends in high places. This guy's neighbors sound like they were a real piece of work, and generally unfortunate people to be around. Fortunately, he was able to befriend some crows that would appear to have picked up wind of this, and proceeded to stand up for him. With all the wild stories of people's experiences with intelligent, devilishly clever crows, it's really no big surprise.
For another glorious tale of petty revenge, check out this story about a sister who always stole their sibling's food, so the sibling took revenge at graduation.