Thanks for sharing your experience. Yes. It seems you did TWO right things.
- One was not to show anger to the manager and co-workers and to bear the unpleasantness. (Of course, it would have been OK to ask why you were demoted without showing anger. That information could be helpful in case if you did something wrong without realizing it.)
- The second was to leave the place ASAP.
The second point is important too. Vipaka materialize under suitable conditions. It might not have materialized if you had done the same work at a different place.
- All we can do is avoid conditions for the vipaka of the previous kamma to materialize. That is what I discussed in #4 of my above comment.
