Former Attorney General Bill Barr’s “about-face” from one of Donald Trump’s most vocal critics to political endorser spurred outrage from one of his former colleagues Monday. Alyssa Farah Griffin, the former president’s communications director, shredded the Republican’s stated reasons for backing Trumps’ presidential reelection bid during an interview with Kaitlan Collins, the CNN host who quizzed Barr about his endorsement during on-air sit-down interview Friday. “Honestly, the interview felt like a hostage video,” Griffin mused to Collins as she recapped it. “I noticed that he was not regula…