Big Brother alums have come to Ian Terry’s defense after season 22 houseguests were caught mocking their autistic costar on the CBS’ show’s live feeds.In one unaired clip from Big Brother: All-Stars circulating on Twitter, Dani Briones and Nicole Franzel can be heard chatting about Ian’s “rocking.”“I can’t even look at him sometimes because [of] his constant movement. It stresses me out,” Dani said.