Melchett01:-
Could things have been handled differently, more discreetly - by both sides? Probably.
I'm sure that you are right, but then it takes two to Tango as they say. He was indeed outside the UK Intelligence fraternity then, but he was in MITRE (until they pulled his Security Clearance). It was presumably what he learned there re Network Analysis that convinced him that the West was adapting the same complacent/arrogant assuredness of its invulnerability that so characterised the German weaknesses.
Would they want to know that? Probably not. Did he try to tell them? Probably. Did they instead shoot the messenger? Almost certainly. Did that drive him to publish and be damned? Possibly. We'll never know I guess, but it's a well trodden path with plenty of footfall to this very day.