Bad design....the spikes should have been circumference to circumference through
the hub, not radiating from
the hub. Tied together at the hub, it would have stood without ever dropping spikes. The sway / vibration could have been alleviated by any number of modern architectural dampening techniques and materials.
Bad design....someone's (genius????) doodle while on the phone, and assembled without thought as to the stress on the materials... Pull it down and start over.