Possible Clues:

• It releases one from an obligation imposed on others
• Immunity for member getting into swirling river first
• Discharge drunk - exit one MP!
• Flower given to Mandela's opening at improper point of release
• A release from, eg, tax liability
• Freedom from liability
• The next poem I am freed from like this
• Former European minister's first point arranged immunity
• Immunity from an obligation or duty
• Freedom (from, eg, tax)