Will Louisiana's Sand Bar simply divert the spill onto neighboring shores?

By now you've heard of Louisiana's plan to proceed with their colossal 80 miles of sand bars outside the barrier islands to divert the oil spill away from the Mississippi Delta and LA coastal wetlands. I can understand their concern and justification, but how can we predict how this change in the near-shore geomorphology will affect the oil spill. Protecting a critical estuary is important. What of the shores of neighboring states if these sand bars divert the oil spill their way?

Check out NPR's LA Sand Bar Plan Worries Some Scientists at http://www.npr.org/templates/story/story.php?storyId=127018713