I'm guessing it was because it's such a political hot potato, and this came out of my thesis.
I want to be very careful and very delicate, but CUPW has a reputation for being the most militant union in the federal public service. If anybody wants to challenge me on that, I can point you to pages.... It ended up that one-third of my thesis was on all of the strikes in Canada Post. They weren't called CUPW then, but postal workers were involved in the 1919 general strike in Winnipeg. I'm not criticizing them, and I'm not condemning them. I'm simply saying that it's much more militant than the other public sector unions in the Government of Canada, so it could have been a reluctance to go down that road and engage in a long, protracted strike.