How stupid can a man be?
1st stupid decision - Barnaby was on thin ice from the incidents earlier this year - even if he wants to go to a bar and have a few, ride with a designated driver, or pay for a taxi. Anything to avoid possible violations of his plea bargain. But no, he just goes out and drives.
2nd stupid decision - after he already made stupid decision 1, to drive when he shouldn't have and somehow damaged the wheel of the car while driving drunk, he should have just parked it (legally), called a tow truck and friggin walked home. Or called a taxi cab. IF he'd done this, he probably could have still avoided the DWI charge. Probably most of the drama and the damage to the Porsche occurred by him trying to drive it when it shouldn't be driven.
3rd stupid decision - If you're driving DWI, you probably want to minimize the attention you might draw to yourself. But what is gonna draw more attention in an upscale suburban residential neighborhood/area than a badly damaged Porsche scrapeing and skittering on it's wheel/frame in a semi-controlled weaving fashion down the street? He might as well have set off some Roman candles from the roof while he was at it, and had 4 lit Tiki Torches burning away on all 4 corners of the vehicle - sheesh!