Possible Clues:

• So bad that I leave in the middle of it
• The North I leave in there is sinful
• It's no good, so I leave during it
• In this I leave Y, as it's bad
• It's all wrong if in this I leave before Y
• Evil, wickedness
• Wicked thing I state, maintaining 'You're not going to sack me!'
• Evil act
• Brief resignation letter penned by Sidney, regularly wrong
• Highly immoral behaviour