WRT the assertion the crew weren't looked after by Jetstar, it's Qantas GROUP security that gets involved. The Duty Security Controller isn't just for mainline.
Not any more!
As of 1st July 2012 the "Qantas Group Security & Facilitation" has moved to a decentralised model. (each business unit pays for their own security team)
There is now a "dedicated" security team for each business, being Qantas International, Qantas Domestic & Jetstar.
Each now has their own Head of Security (P.D for JQ) who report to the Group Head of Security.
As far a security incidents such as this, each will manage their own business & the Group Head of Security ensures oversight for regulatory compliance.
MC