What is Uncle Karl’s attitude when he arrives at the bank in “His Uncle – Leni”?

K.'s Uncle Karl rushes into town after hearing from his daughter, Erna, that K. is on trial. He is extremely annoyed that K. is unconcerned with his predicament, "Josef, you've undergone a total metamorphosis; you've always had such a keen grasp of things, has it deserted you now?"