Glad that nobody was seriously hurt. Obviously in this case I'd respect the investigative process in determining cause, but I'd wager that just about any stretch of any street is a dangerous one at a time when an alleged drunk driver is on it.
A little more via CBC at the link below, where it's said Police will be looking at laying charges based on results of analytical investigation:
http://www.cbc.ca/beta/news/canada/manitoba/brandon-crash-parked-cars-1.4245594