This is an interesting subject. How one would handle if it were them in the situation. One doesn't want to condone someones breaking of the law. And again you don't want to be the informer either.
Baiting has been on going for years in Wisconsin. That's what brought CWD into focus over there. In past years it sounds like you and friends did well on that same parcel of leased land. I don't think anyone's behavior changed this year from the lasts and the one before. Deer wander off one parcel of land to another all the time. Breeding, safety, & food are a few reasons that I know of. Its just natural for them to do so. The difference is. (I would be speculating some saying this.) That local neighbor knew where deer perhaps cross and move about on his land. And according to you it appears made use of that information before those same deer returned to your plot of leased land. I don't think you and friends were gypped or cheated. You fellows just got caught up in the natural ways wild animals behave. How I'd handle. I'd re-plant that food plot in front of your stand with another local seed instead. Like alfalfa or clover. Something natural to that area. Consider buying your seed from a local Grainary. Maybe next year you and partners will have better luck in harvesting your deer.
Sorry but I disagree. No corn in 2 months and no baiting allowed in this county. Doe full of corn. Neighbors kill all the big bucks that were on our land a couple weeks before. Average 4 buck deer per year every year for last 10 years. Same hunters and same blind locations. And none of the other neighbors except the one get deer. Last year we took one that was well over 20" wide.
And YES, there were 10 nice bucks on this land. I'm talking 18" on up to mid 20" spread on a couple. Nice racks. The person giving this info who also bow hunts on this land is a farmer who planted the food plots this year to hold the deer. These deer were not all seen together at once but at different times. One of these deer was recognized by a pic of the neighbor in the paper with it during bow hunting. Do you know how much corn you would have to put out to fill all the doe and bucks in the area? That's how much they're putting out.