He may not be cooperating with his new attorney so that's why it is being requested. I think a psychiatrist will conclude he's faking.Odd that he would claim incompetence when the weekend before AJ was murdered (just 3+weeks ago), Freund and AJ took the train to his office. He worked for the day, clocking in and clocking out. He was able to create a plan so no coworkers would see his son. He was competent enough to know that AJ had to leave through a back door in order to keep the secret that his son was at work.
He knew enough that he had to hid his muddy boots in a bag. He knew enough to create an alibi for the morning that AJ was reported missing-- he got receipts, etc.
I think he was competent.
JMO