I think Mark might be a guest on some performance strumming acoustic or something like that.
It is good to know your limits and enjoy the life.
I thought that might happen during the Transatlantic Sessions concert in London last February. It was the perfect scenario for that. His own city, a band in which one of the musical directors is his friend Phil Cunningham, a band that has two of his band members, John McCusker and Mike MCGoldrick, and having announced his new record, the perfect chance to make a guest appearence to sing one or two new songs, as Clapton did last year. I bought tickets for that gig just in case, as I've seen one Transatlanctic show and enjoyed it a lot, so it was a bet that if would had went well, it would had been excellent, if not, I would had enjoyed a top quality show, which I did. Obviously he didn't appeared at the show despite all the positive factors for it, and in a way it was a slap of reality, that day I knew I would never seen again MK live again.
So MK talking openly or diplomaticly, about it, is just make peace with that slap on the face and settle the reality for once and all.
I just wish MK to live happily and quiet, as he has earned.