Good idea or likely to come back to haunt you?

I don't mean calling your boss a cunt or anything, i mean sending an email to you director, CCing some higher level bosses in an attempt to expose them for the useless waste of space they are, and how their irresponsible handling of the takeover of your company together with a ridiculously narrow-minded style of directing since has had nothing but detrimental effects on the running of the business...or something...

Thoughts?