Steve Bannon, the bomb-throwing media figure and nationalist mascot who was once one of Donald Trump’s most trusted advisers, stepped down on Tuesday from his post as executive chairman of Breitbart.

The news is the last step in the former White House chief strategist’s sudden and ignominious fall from Trump’s grace, which came after Bannon was quoted making abrasive comments about the president and his family in a new book by Michael Wolff. Bannon was harshest toward Don Jr., who came under fire last year for his campaign meeting with a Russian lawyer. Bannon called the meeting “treasonous” and “unpatriotic,” and said that investigators would “crack Don Jr. like an egg on national TV.”