Possible Clues:

• “Noggin”: word that’s contrived to cause offence
• It's not good for those in 8 across to make a judgement call on this
• Cryptically, God in sin?
• Improper behavior
• Immorality in God?
• The crime of performing badly?
• Illegal behaviour
• Malfeasance
• Misdeed
• Bad behaviour could be a clue to "dingo"