Burning bridges isn't always a bad thing. And sometimes doing so enhances your reputation, rather than ruining it.
I'm betting a whole lot of people have more respect for Carol Bartz today, than they had yesterday, exactly because she spoke her mind, and showed some emotion and cut through the "PC" crap. At the very least, I know I do.
You can read about Ellison berating employees and screaming at them in a great book by Charles Ferguson called "High Stakes, No Prisoners". It's a wonderful accounting of building a startup in web 1.0 internet and selling it to MS -- Ferguson started Vermeer which built Frontpage.
See also, for example, Ballmer screaming and throwing chairs.
(Throwing chairs raises the "probably has issues" flag in any context that is not an Arnold Schwarzenegger movie.)