Kelpie,
Stick to chasing sheep.
What do you not understand about:
1. The unions PIA was killing Qantas but not killing the national interest
2. Joyce decided to invoke his only option, of PIA involving a lockout. This was enough to kill the national interest hence the govmint action and hence the FWA decision. Joyce agrees with that. That stops the killing of Qantas. The govmint and the unions didn't believe he'd do this and therefore were caught off guard hence the anger. The rest is a sideshow.