You can clear that turn even through the enrage mode with 1-2 Tank o.O Just let the PLD use Sword Oath and the WAR deactivates Defiance.
It's pretty simple and can be done this way too. The other aspect is that the party needs to accept it that they have to go with 2 tanks because you need 2 tanks in turn 4 anyway.
That's all i have to say about this. =)