Complex sentence: Two years later, the Berlin Wall comes down, and Wolf is afraid he will be exposed, partly because his parents are thinking of selling their dacha to westerners how want to raze and redevelop the estate, doubtlessly discovering the body.
Split into simpler sentences: Two years later, the Berlin Wall comes down, and Wolf is afraid he will be exposed. Also worrisome is that his parents are apparently going to sell their dacha to Westerners how are going to raze and redevelop the estate, doubtlessly discovering the body.