Great point, and not something I had thought of. Just makes the "expected" solution even more odd... If you're exposing nodes enough to get an operation to dele

Great point, and not something I had thought of. Just makes the "expected" solution even more odd... If you're exposing nodes enough to get an operation to delete a particular node with no context, then the given solution just invalidated a completely different node, but not the one you asked it to delete. No, the one you asked it to delete is still valid, just with different data associated.