In recent interviews, when Mark is asked about the RRHOF, he says he is honored by the recognition, but couldn't attend because he was busy at the time (true, with the album and Local Hero) and that he wasn't happy with the demands from the organizers (jams, DS reunion, "no one should tell me what to do").
Why couldn't his management just have issued an official statement, at the time, with these reasons? That complete-silence course of action I think was unnecessary and actually disrespectul towards the fans who made it happen. Plus now he has to answer this question in every interview. Strange.