More fireworks have erupted over that “illegal” 15-story Verizon Super Bowl ad at the Embarcadero Center that was intended to greet waterfront visitors to Super Bowl City.

The Super Bowl 50 Host Committee removed the ad last week from Four Embarcadero after City Attorney Dennis Herrera declared it violated city limits on outdoor advertising.

The committee and Verizon called the incident an “honest misunderstanding.”

Privately, however, Verizon reps were said to be fuming over the public relations snafu and are telling the host committee that they want a partial refund of the estimated $2 million cash and in-kind deal they agreed to as the major sponsor of Super Bowl City.

“Of course they are going to want to pay less … but we are trying to work out a way so that everyone wins,” said host committee spokesman Nathan Ballard.

Verizon spokeswoman Heidi Flato said only that the company and committee were working “to come up with a solution.”

“It’s been a great partnership so far, and certainly we don’t want this to distract from the great work we have done so far,” she said.