It’s only slander when NPR says it

InstaGuy points us to a story on NPR attempting to remove-foot-from-mouth regarding a story it ran insinuating that the Traditional Values Coalition might be linked to last year’s anthrax attacks.
TVC’s director, Andrea Lafferty, is quoted by Variety in response to NPR’s apology as follows:
“A simple apology today is not enough. Eight million people heard this libelous, slanderous report,” … But Lafferty termed the correction “pathetic” and said all NPR staffers must have “graduated from the school of anti-Christian bigotry.”
Hmmm. Sounds like NPR screwed up bigtime on this one. But perhaps Ms. Lafferty’s lawyers might want to remind her that responding to slander with your own slander is not the best legal strategy in the world?