Lawyers often get in fights over fees when departures occur. This common scenario caused the departing lawyer to threaten to post negative comments about his former firm on the Internet if they didn’t pay up. That led to disciplinary proceedings being brought by the state bar, and in response he voluntarily resigned in lieu of discipline. The OED then held that this constituted disbarment and, thus, was grounds for imposing reciprocal discipline disbarring him from representing others before the Office.
The decision is not legally ground-breaking, but it does show how things snowball. The opinion of the OED in In re Haley (OED 12/30/14) is here.