If he is the land owner and has the stand on his land no matter where it is facing it is case closed. You lease the land for hunting only. IMO making a big deal about it is a quick way to lose the lease. He might have placed the stand after learning that outsiders are leasing the adjoining property to keep you out of that connecting area. His logic might be that if he has a stand there even if he doesn't use it you won't hunt near it.