If you look at the images from the European Grand Prix contests it is clear Ronnie has torn his left lat. What a disaster that is. How the heck did he do that? Well, steroids and heavy deadlifts could combine to blow something eventually. Just my theory. His left triceps looks shorter than the right one. Sergio Oliva had that problem later in his career. I am not sure what causes that. Lots of bodybuilders are tearing muscles. Biceps, pecs, lats, you name it. Arthur Jones was right when he said we should not demonstrate our strength. Doing sets with 10 reps is still the way to go. All those heavy sets for a few reps is insanity.
Deadlifts have NO place in a bodybuilders program. That many do silly things doesn't surprize me. Collectively we are all dopes who lift weights because we believe so much nonsense and embrace a lot of crap from the past. For example, why does anyone still use free weights? Beat me, but there you are. Knuckleheaditis is almost universal among bodybuilders.