Corri, I believe that there are stated expectations in M and then there are implied expectations in M. I don't recall specifically stating in my M vows that I would never be fired, but I do recall stating that I would foresake all others. Things come up during M, as partners we need to deal with and let our expectations be known, negotiate and re-negotiate. While losing a job once, particularly when one is fired due to their own disregard of company policy, can be devastating I don't think it shakes a M to the core quite the way breaking the stated expectations in M vows does.
"Happiness is a butterfly, which, when pursued, is always just beyond your grasp, but which, if you will sit down quietly, may alight upon you."