oof. that's rough. a friend of a friend told me of her latest trial with a subordinate:
she had tasked this dude with a rather large project, and at the beginning of the week, he was all, "i'm 'bout it 'bout it, i'm on it boss, yes!" so by the end of the week, she had not heard a peep from the dude, and at end of day friday she asked, via email, for a status report. it wasn't until she got home that she saw his reply, which was very bitchy. he basically accused her of saddling him with an unworkable project, attacked her management style, attacked her work ethic, basically called her a bad boss.
the next email that she gets is a notification from the exchange server, saying that her password has been reset due to multiple bad authentication attempts. the email after that was an apology letter from the dude, asking her to disregard the email, and that he'd have the project done by monday.
so he fired off his angry missive, said "FUCK I SHOULDN'T HAVE SENT THAT", tried to break into her account to delete it, and then apologized. it probably would have ended there if the server hadn't recorded his IP (which was internal... he was in the office as he was trying to break into her account) but it did, and they then had to start a review process.
during said process, he was under investigation for other counts of email fraud, so the project she had assigned to him was never completed by him - my friend had to pick up the slack.