Source? I'd like to believe you're right, but the author was an MLH volunteer, not just a hackathon participant, and the MLH comment says "We worked with the event organizers to locate the individuals."
https://www.reddit.com/r/uwaterloo/comments/3ln4cz/two_hacke...
From the link: "For the record: MLH kicked him out. HTN did not. I feel like I definitely need to make it clear that none of the directors of Hack the North were involved in this decision. As for me, personally: I am extremely unhappy about the decision."