Harley Race , the inventor of the diving headbutt , has stated that he regrets ever inventing the move , because it appears to cause spinal problems as well as concussions , and may have contributed to Billington 's disability .
The inventor of the diving headbutt Harley Race , has stated that he regrets ever inventing the move because of the fact that it appears to cause spinal problems , and may have contributed to Billington 's disability .