Nancy Grace, Tristan MacManus Fight On 'Dancing With The Stars' (VIDEO)

Nancy Grace got into a bit of a tiff with dancing partner Tristan MacManus on Monday's "Dancing With The Stars."

Grace, frustrated by weeks of low scores from the show's judges, had asked MacManus to come up with trickier coreography to wow the panel. But when MacManus obliged, she started to complain that he was overwhelming her.

"I know what you're doing," she said. "I asked for more dramatic and difficult choreography and you're trying to put so much packed in that I'm going to f--k it up."

MacManus bridled at this theory. "That is the stupidest thing--why would I do something like that?" he said. Grace maintained that he was setting her up to fail.

"That's the stupidest thing I've ever heard," MacManus said again. "...I don't know what you want. Do you want to get better or do you want to keep doing the same stuff?"

As it turns out, the duo's foxtrot won hearty plaudits from the judges (with the partial exception of resident crusty Brit Len Goodman.) Mission accomplished!

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