This is pretty sweet.
Tracking down the creators reveals they are David and Ian Purchase - the Purchase Brothers - who seem to be a Toronto-based directing duo. They appear to be represented by Sons and Daughters agency in Toronto.
You can see their page on the Sons and Daughters site here, where their other commercials are viewable - or at least will be until traffic nukes the site... I expect this thing is going to get a lot of attention.
I wonder if they're auditioning for a medic for Episode 2?