Almost every sports tournament I've been involved in, the rules state that in the event of a tie (after goal difference, penalty shots (soccer or hockey), goals for and against etc) the final tie breaker is a coin toss.
Now, usually its in a round robin type of thing, but its there (and probably in the rules here too) because something has to be decided and there is not the time for further tie breakers.
But many times as a kid, playing with 7-10 minutes left in the game but it got delayed, and the clock suddenly went down to 2 minutes because the ice time was running out, and you had to deal with it. Same with Minor Hockey week back in the 80's - overtime was 5-5 with no goalies, and then every 3 minutes 1 kid from each team taken off the ice. That's really not much more than a coin flip, either.
Canada won the Gold Cup in 2000 in soccer in part due to winning a coin toss after the round robin in the earlier rounds, to just get into the QF - they then won the next 3 games.
http://www.theglobeandmail.com/sport...rticle4160365/