it really doesnt matter iv athr is o or off. The protection works the same way i.e. if speed decelerating to v.a.prot, elac orders pitch down so as yo avoid speed dropping any lower.
As for elac maintaining v.a.prot? Once the plane is capable of flying faster, it will do so, and the high aoa protection is no longer active.
You say "airbus will maintain Vprot after piching down". Are you saying that the elac will maintain v.a.prot even after the plane accelerates, by pitching up??