The very short version of this:
The company is moving 10 tails from it's mainline to a new start up just after the pilots unionized. It's clearly an attempt at union busting as the wages offered to the "new" pilots are roughly 50% of the current wages paid. No contract has been negotiated with the pilot group yet. The rhetoric is ramping up as the executives of the company have now stated that 10 tails will become 40-50 tails. The model the company touts as a success is that of JetStar.
Wages aren't that great in Canada to begin with because there has been a pilot surplus in this country for over 30 years (where else would you see 10,000 hour first officers in a B-737?). We are finally catching up with the rest of the world on the pilot shortage and would like to see some wage increases.
Cheers