Did God really turn a man into a werewolf?
Yes … yes he did.
Here is what happened: “All this happened to King Nebuchadnezzar. As the king was walking on the roof of the royal palace of Babylon, he said, ‘Is not this the great Babylon I have built as the royal residence, by my mighty power and for the glory of my majesty?’ Even as the words were on his lips, a voice came from heaven, ‘This is what is decreed for you, King Nebuchadnezzar.’ Immediately his body was drenched with the dew of heaven until his hair grew like the feathers of an eagle and his nails like the claws of a bird. Let him live with the animals of the earth. Let his mind be changed from that of a man and let him be given the mind of an animal.” Daniel 4: 15-16, 28-31
So yes, God turned a man into a beast (though not necessarily a werewolf). And if God did it once he could do it again.