I'm sorry you had to go through that. Sadly, IT is full of 'colorful' characters like these. I've been on multiple projects that could have been so much more fun and lighthearted, were it not for 1 person. Due to their influence (whatever it is) the atmosphere completely changes and eventually people lose interest in the product, burn out, quit or are laid off because of it.
No good can exist without the bad I guess.