Yes, that New Jersey server may have faked the note and the refusal to tip, many news outlets are reporting. Salon reported this morning:

…earlier this week, Morales’ story took a twist — when the family she said stiffed her contacted NBC News to dispute her claim. The husband and wife produced their copy of the receipt, which showed an $18 tip, and what they say is their Visa statement, which likewise reflects the larger total. They also say the alleged snarking on Morales’ appearance went down differently – they say they’d been told their server would be “Dan,” and when Morales appeared, they said, “Whoa, you’re not Dan.” The husband told NBC he didn’t even vote for Chris Christie because Christie doesn’t support marriage equality. “Never would a message like that come from us,” he says.

Oops.