Brian Henson, who is the company's chairman, told the Times that Whitmore often sent emails attacking writers, directors and others involved in Muppets projects.
Studio: Kermit actor fired for 'unacceptable' conduct →
Mr. Henson, who co-created the show with Patrick Bristow, said his famous father would have been proud of the night's proceedings.
Jim Henson Company studios hosted R-rated Trump-bashing show: 'Puppet Up! -- Uncensored' →