No Choice
The AOA GC have no choice in this matter.
The pay deal offered was declined by the membership.
CC was overwhelmingly voted for (with a much increased turnout)
A non negotiated pay deal has been imposed therefore the GC have a mandated responsibility to announce CC. Not to do so would probably be against the AOA rules. Also I suspect a fairly sizeable number of pilots would resign from the AOA should CC be called off.