In a commercial area, Jim asks permission to operate a semi-industrial use. The same officials obstruct his request, but won't openly vote against it. The officials lose respect, while the community loses business opportunities. Even subtle abuse makes an official feel above the law. They soon stop following rules, and begin rolling their own.
Ordinances are law, however, and apply to officials, their friends, and families.
Site plan standards must be documented clearly, and applied uniformly. Rezoning should occur only when consistent with the plan and other standards. Breaking these rules leads to greater abuse, further eroding self discipline. A loud reading of local ordinance or state law may snap an official out of this condition, if only temporarily. Irresponsibility is a tragic symptom.