Alternative finale : Is it possible that....

...The actors were not prepared for this finale to air ?? And that's why they were all super hyped ?

Like many of us think "Cece is A" was a backup plan in case of some spoilers ruined the "real" finale. Maybe they aired multiple finales and the actors were all expecting to see the "wren is A" finale, and then this one aired and they all freaked out ?

Because I can't figure out why they were all THAT excited (especially Tyler and Ashley who went bananas).