There's a lot of different "angers". I've seen tempers spill over and people get into fisticuffs, and long after its over there is an ickiness that pervades the office.
There is righteous indignation and moral outrage.
There are assertions of power that may border on harassment.
There is frustration (you know those laser printers that don't seem to know how to do anything except jam up?)
And I'm sure there are others.
I think the critical element is that when the temper subsides, steps be taken to restore social cohesion. Most people will not have seen yourself or whomever blew their stack get that angry before, so there is a need to reconfirm pre-existing relationships, and remind people that one IS the person they knew before the eruption.