hmm, just some food for thought.. He was once bitten (or twice?) by Two-face and survived. Could this be relevant to his hidden potential ?. Of course its possible Momo blood is super powerful. But if they combined both vampires in his blood........ He did good fighting "normal" vampires as human. Now lets see him go.
Seems to me he lost control and his instincts told him vampires are his enemies. So he just ripped off her head. Sorry morganna, you seem interesting and all, and it was short but sweet. But I dont think you will be missed. My bold prediction was totally off, a failure.