Albie, like I said, sea-lawyering for sure but it's kind of chicken-poop for the AF to expect to force-retain part-time volunteers in a part-time status.
If it's a national emergency, fine, mobilize whoever you need. Anybody who has obligated service remaining of course needs to do their time. But if it's AFRC trying to make their readiness numbers look good...well they should have managed that better, it's pretty predictable especially in the reserves.