The TFW was part of it. The other half was their remaining staff giving the same amount of respect back to the employer that they've received.
the TFW employees were slated to be paid substantially more than Sunwing's own employees, which is near the bottom globally of 737 pilots. That's quite a slap.
The South Africa jobfair is from Flair airlines, a new upstart with average national pay- which again means substantially lower than most other countries.
There's is a massive shortage of qualified pilots in Canada, both from qualified drivers leaving the country, and a record low of new license issuing. Nobody wants to go into a career where the wages have been driven down 50% in the last 20 years.