The Implicature of "Refudiate"

From an online source:

"How typical of pompous, holier than thou Liberals, to jump on Sarah Palin because she screws up 'repudiate'. We all knew what she meant and she used the word in proper context and that's all that matters."

"EXCEPT SHE DID NO SUCH THING, OR SHE WOULD HAVE EXPLAINED THAT SHE CLEARLY MEANT 'REPUDIATE' BUT JUST HAD A SLIP OF THE TONGUE. SHE'S USED IT TWICE BECAUSE SHE THOUGHT THAT'S WHAT THE WORD WAS. AND THEN SHE SAID SHE MEANT 'REFUTE'. ONLY THAT WAS EVEN DUMBER, SO HER THIRD EXCUSE WAS TO CLAIM SHE WAS MAKING UP A NEW WORD ALTOGETHER."

"Ohhh but of course to the backwards thinking Liberal all that matters is that she misspelled it. So clearly she's an idiot."

"SHE DIDN'T MISSPELL ANYTHING EITHER. SHE WAS TALKING."