I can't stop picturing him decked out in an ill-fitting suit, shuffling papers around, and submitting irrelevant objects as evidence. Maybe he objected to the wrong things at the wrong times or used legal jargon incorrectly. Now, I'm picturing the pinched, sour face he'd make if the judge announced that his objection was overruled. He's like Joe Pesci in the beginning of My Cousin Vinny (before he got his shit together and won the townspeople's hearts).
Why did he volunteer to do it? Did he want to say, "Your Honor, I rest my case!" out loud THAT badly? How can I ever take him seriously now? The answer is that I can't.
On the plus side, finding out he acted as his own lawyer is one of the funniest reasons I've ever had my boner killed. So, congratulations, I guess?