Possible Clues:

• He must feel it disgraceful to be such a false editor
• Mortified or consciencestricken
• In time, pity makes you embarrassed
• Abashed - embarrassed
• Not a genuine editor, and not proud of it either
• Embarrassed and Contrite
• Contrite or embrassed
• Feeling remorse and contrition
• Feeling guilt or embarrassment
• A bogus journalist is conscience-stricken