You do understand that pretty much everything Alberta imports OR exports goes through the largest port in the country, Vancouver, right? Do you think you'd do okay with no condensate, or access to market for your wheat? This type of thing is pretty stupid and ADULTS don't use threats, because they can come back on you! Pretty sure Vancouver and BC could survive a shut down of everything Albertan going through our port, but I highly doubt Alberta could say the same!
Land locked provinces shouldn't be stupid enough to start any sort of trade war with any other province that has complete access to the rest of the world!