But as Alan Arnold pointed out, he was well enough to attend protests at 10 Downing Street against a tax that would raise the price of cinema tickets.
If Guinness ever enjoyed working on SW, that time surely passed when Lucas decided to kill off Obi-Wan. It does seem like Guinness regarded that change as an unforgivable betrayal. It almost certainly offended his sense of professionalism, and I don’t think his attitude to the series and to Lucas ever really recovered from that.