Sure, it's possible. Not advisable though. Bats + 2 stacks of armor debuff are going to hurt, + they're not in melee range so they're up longer = more raid dmg. The enrage is super easy so just 2 tank. If you want to pad for rankings just stand in front of the boss all p1 and make rapid taunt swaps so vengeance/riposte never falls for you.