http://thecaucus.blogs.nytimes.com/2009/01/21/oath-is-administered-once-again/
President Obama was re-administered the oath of office on Wednesday evening by Chief Justice John G. Roberts Jr. ...
Mr. Obama and Mr. Roberts stood in the Map Room of the White House at 7:35 p.m. and recited the oath before a small group of advisers and a handful of reporters.
Flubbed oath. Is it legal? Should be, but just in case we should have a do-over.