Possible Clues:

• Stir up trouble
• Rock the boat
• Spark controversy
• Cause a stir
• Some stylists may do it to stir things up
• Cause a sensation, or what the first words of the answers to starred entries may do
• Change existing situation in such a way that it causes problems
• Advice from Neptune?
• Be a disturbing influence - on ocean surface?
• Cause disturbance, raising white horses