That was my suspicion as well after reading this article. We really need to wait...

cpncrunch on June 28, 2013 | parent | context | favorite | on: Voyager 1 Discovers Bizarre and Baffling Region at...

That was my suspicion as well after reading this article. We really need to wait until more data is gathered - or better still, another probe enters the area - before making any grand pronouncements.