Ormuco, from my understanding, is also located in Montreal.
Since there has been mention of Montreal having some wintery weather, it's something to consider that perhaps Ormuco's servers are also being impacted by the wintery weather.
There was an
individual that posted on the
current Reddit thread about this outage about how Montreal was having wintery weather beforehand, though. Still something to consider.
This current situation is completely out of SE's control. As was the situation from three days ago, where as Level3 posted on their Twitter account that their Montreal servers were having problems. SE cannot control the flow of Internet traffic.