Don't Make Your CV (or Your E-mail or Your SMS) Your Enemy: Fishy Stuff Emits Noxious Odors
Never send out email that you would not want to be shared more widely. It's fine to say that you disagree with the dean's or provost's policy, but that you believe the provost is sleeping with the new professor (the allegation may well be true.) won't fly--at least if you are sending the email from your university account. By the way, your text messages may well be available to outsiders. So, better to say it one to one, than write it. This is not a matter of free speech, but of prudence.
Finally, if you are in a vulnerable position, either have an attorney on retainer or a back-up position. If you have a fishy CV, you need to find a place where you can swim with the fishes. The problem is that universities are filled with people who fish for hidden details (in nature, in archives, in interviews), and they will find something if it is there.