Oh, this is precious. From Above The Law:

Like many a promising legal career, the Roberts resignation rumor traces its origins to a 1L class at Georgetown University Law Center….

Here’s an account of what went down in Professor Peter Tague’s criminal law class this morning, from a 1L at Georgetown Law:

Today’s class was partially on the validity of informants not explaining their sources. [Professor Tague] started off class at around 9 am EST by telling us not to tell anyone, but that we might find it interesting that tomorrow, Roberts would be announcing his retirement for health concerns. He refused to tell anyone how he knew. Then, at around 9:30, he let everyone in on the joke.

Note the timestamps on the Radar posts. The first one came out at 6:10 a.m., i.e., the Pacific Time equivalent of 9:10 a.m. Eastern time. The retraction came out at 6:36 a.m., i.e., the Pacific Time equivalent of 9:36 a.m. Eastern — shortly after Professor Tague let his class in on the joke.

The Twitter generation - the new face of journalism?

The ATL post has more sources that confirm this sequence of events.

H/T: The Volokh Conspiracy