giving an excited fist-pump during the star’s explosive defamation trial.Chew confirmed to Law&Crime that his now-viral courtroom celebration came because he knew Amber Heard’s decision to mention unfounded rumors about Depp’s treatment of another famous ex, Kate Moss, would be a turning point in unraveling her testimony.“There was an instance in which Ms. Heard actually did admit to punching Johnny, and that was what we call the ‘staircase incident,” the now-celebrity lawyer told the outlet.He recalled how Heard told the court she “had to punch Johnny” or else he would “have pushed her sister Whitney down the stairs the same way she had heard that he had pushed Kate Moss down the stairs.”“I lost my composure for a moment and did a fist-pump because I knew that was not true,” Chew, 60, said of his caught-on-camera celebration.Still, he insisted that Heard’s mention of the British supermodel “put a lot of pressure on us — we really had to come up with the goods.”“Fortunately, Ms.