Maybe Kal-L will knock some sense into him...
Though it really looks like he and Lois were the only sane people in the Paradise dimension. Superboy-Prime is like a deranged kid with a chaingun who thinks he is right. He has an enourmous power but not the emotional maturity or mental capacity to use it judiciously. Hence Pantha looses her head.
On the other hand, a friend of mine thinks that he is actually going to survive the Crisis and become a recurring villain.
END SPOILERS