By Tzvi Machlin The Miami Heat dropped their lead in the Eastern Conference Finals last night as the Boston Celtics evened it up at 1-1. But Colin Cowherd believes it’s already time to push the panic button in Miami. On Friday’s edition of The Herd, Cowherd was pessimistic of Miami’s chances of fighting back in the series. He said that unless Jimmy Butler plays like Superman, he doesn’t see them winning another game. “Unless Jimmy Butler wears a cape and is Superman, I don’t think Miami wins another game in this series. I don’t,” Cowherd said. Cowherd pointed out that Butler has been carrying …