Erm, isn't that exactly what we just explained is likely to happen? Though no need for a "lockout".
One option is dismissal for SOSR (Some Other Significant Reason), coupled with a 90 day opportunity to sign up to a variation of contract; it's pretty standard stuff.
Google is your friend in these matters, as is a close reading of my summary on p29:
http://www.pprune.org/passengers-slf...ons-iv-29.html