was his shoulders that bad?
Yep, he had multiple surgies on his shoulders back in the 90's. It was reported that he had no cartilage in shoulders ( I'm guessing rotator cuff injuries), just bone to bone. He was advised to stop heavy training by doctors...but he kept on. He was known for his delts and freaky width, it was his trademark, and he didn't want to give that up, I guess. That towel maybe a habit or help him deal with the pain.
"Who said I have flat biceps...I dunno, I have to check" LOL that was funny