Cactus Game Design Message Boards

Nope.  The block has already happened and PoC wasn't active.  They would have to add another character to battle from hand to trigger PoC.

What if I...interrupt the battle and then play PP?

Are you suggesting that "interrupt the battle" might somehow temporarily suspend the fact that your opponent already blocked with an EC from their hand and then make the "reblock" from hand?

If that's what your asking, interrupt the battle doesn't do that.