This might be the explanation for today's slide
Looks like the government is taking an overly cautious approach to legalization re. recreational use. It sounds like they won't be delaying the timeline for the legislation, but they are indicating that there will be further regulatory hurdles.
Overall....I say a "safety-first" approach is probably a good idea in this sector.
https://www.bloomberg.com/news/articles/2017-03-07/trudeau-s-pot-czar-says-canada-won-t-rush-marijuana-legalization