I keep a heavy free weight at my desk just for those sort of occasions, or whenever I get angry. It does help calm you down, and throwing the weight up is obviously going to help in other ways.

Don't have a free weight? Drop down and do push ups until you absolutely can't anymore. When you're physically exhausted you aren't thinking about anything else...at least, I'm not.

Still on the bike and not at the office to do push ups? Sprint as hard as you can for as long as you can.

Basically, exhaust yourself beyond where you'd normally break off. Anything to work off the extra testosterone your body is producing after getting angry. At least, those work for me.