Balthasars whole plan was devised in order to keep the Time Devourer from destroying the entire space continuum, right? And seperating Schala from Lavos, right? How does this make him a megalomaniac?
Granted, lotsa peeple died from his Time Crash, but it saved the entire existence of time itself. He called it his finest hour because he couldn't see how everything would work out after the Time Crash went down. That's y he went back 2 1000 ad., in order to guide Serge along the guidelines of his plan. He didn't know if Serge would be able to fulfill his role of seperating Schala from Lavos, so when everything seemed to be working out, he called it his "Finest hour". Stop picking on Balthasar!!