Wexler also states it, on his fine autobiography Rhythm and the blues on page 292. He had just come off recording Communique and thought that it would help Dylan put the new songs together. Dylan's answer was in the lines "Mark does me better than anybody", so he must have heard of him. From other sources I remember reading that Dylan had seen DS live and the suggestion was mutual, but anyway. Wexler, although he admitted that DS was his most lucrative production after the Atlantic years, he doesn't share many details from his days with DS, maybe a page total in all the book, and most of it while referring to other incidents, like Dylan...
As for the videos, thanks Pottel & Guitarman! Amazing videos that I haven't seen before! Vince is a maestro of the guitar. No wonder MK brought him in during "The bug" sessions. His style is fluent and unique and totally suits the song. (which regardless, is one of my least favorites from OES)
I had seen It might get loud and it was a big disappointment to me. I expected more, both information wise, and playing. We have three amazing players and we just don't hear them play their stuff. Maybe because each one has his different and distinctive style...
