If it looked like his old self, just like him, when he had not yet gone through the ceremony, it could be on an assumption, that he was really, time traveling.
They showed great scriptures that revealed ancient passages from the great war between hunters and witches, when they decided to sleep sealed for when that moment came, and in this way on the ancient creatures, if they were sealed.
So, this is how they slept for centuries to wait for the moment of awakening, the legends said, that the gargoyles that according to being built are actually alive, but he did not do it, not in the conventional way....