When building a career, one good rule of thumb to work by is to never burn any bridges. No matter how entitled or petty your upper management is, always take the high road. We know that easier said than done, but you just never know who you are going to cross paths with again on your way up the corporate ladder. However, sometimes an opportunity comes by that is just too sweet of a revenge that you cannot pass it up—especially if you're able to do it anonymously. In OP's case, that is exactly t…