The story of Ewan's desertion, living in hiding, imprisonment on remand after the war, subsequent avoidance of trial on psychiatric grounds, can be pieced together from Ben Harker's biog 'Class Act' and Peter Cox's 'Set Into Song ... the Radio Ballads'. Both well-worth-reading books indeed. I of course cannot vouch for their absolute accuracy & truth with regard to this particular part of EMacC's life; but they both have the ring of carefully researched books of the sort not about to make rash allegations without proper checking.