This concern was forwarded to the Traffic Enforcement Division last week. An officer reported back that the vehicle has a valid resident sticker therefore is not in violation.

if he takes up two spots then it is in violation regardless of resident sticker

There is no regulation regarding the amount of space a vehicle occupies with the exception of blocking a travel lane or when spaces are marked out (parking boxes) as sometimes seen in commercial areas. Residential streets are not marked in this way, therefore, there is no violation.