This thing traces back to the Huffington Post.
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Not the way I read it. I clicked the link. It looks to me like the Huff Po traced it to Radar Onlibne:
John Roberts Stepping Down? ‘RadarOnline’ Claims Supreme Court Chief Justice Considering Quitting; UPDATE, ‘Radar’ Retracts Story
First Posted: 03- 4-10 01:03 PM | Updated: 03- 4-10 01:52 PM
Whew! That’s a big relief.