The attorneys invoked a New York rule that allows attorneys to withdraw when a “client insists upon taking action with which the lawyer has a fundamental disagreement” or when a client “insists upon presenting a claim or defense that is not warranted under existing law and cannot be supported by good faith argument,” or when “the client fails to cooperate in the representation or otherwise renders the representation unreasonably difficult for the lawyer to carry out employment effectively."

Translation: they're afraid of sanctions or even being disbarred if they continue working with the man publicly flouting court orders.

”Mr Trump doesn’t have to help me get out of this,” he said as he stepped into a car. “All Mr Trump has to do is straighten out the legal system, and you’ll find out who the real criminals are.”

This was a civil case, there's nothing to overturn. And you lost it by default because you couldn't be arsed to show up in court.