Typo?

Sure, it's a typo.

Unless style rules have changed.

Here's the WSJ's "Washington Wire" commenting on the romances being conducted to gain endorsements (excerpted):

...The New York Times also offered a funny account over the weekend of the courting efforts being used with Richardson, which includes regular phone calls from Obama as well as a recent visit from former Bill Clinton to watch the Super Bowl.

Obviously, "former" should be preceded by the article "the."

All that education.....tsk, tsk.