It appears Barr is losing patience. To the Democrats, they think they may be backing him into a corner, and they'll either force his impeachment, or he'll resign. Both may be the actual outcome, but they might not have considered Barr knows way more than they think, he's working hard on criminal charges for some of their favored people, and the final outcome may reveal a huge seditious effort to change the government outside the rules of law. If the entire effort to destroy Trump is as illegal as it appears, the final outcome may be the dismantling of the main structure of the Democratic Party.
Personally, I hope Barr comes out with both guns blazing, and payback on his mind.