I agree, I'm amazed Al di Meola can still play some of his stuff. Saw him a few weeks ago and any time he goes fast he tenses up (like veins in the neck popping out tenste) and picks from the elbow, seems totally counter productive to me. I had a teacher back in the 80s that was a huge fan of Al's and worked really hard to play the same way, and taught that it was the best way, I had to undo a lot of that programming. Sadly, Audley Freed was teaching in the room next door, should've jumped on some lessons with him instead.
I just saw Al, and you are right. He is still not quite mortal, but there is tension there, and he almost winces. Al at 30 was a different beast, indeed.