The former chairman of the tax practice at Greenberg Traurig has resigned from the bar for taking over $1.2 million in kickbacks on tax shelters he recommended to wealthy clients.

The incident is the latest ethical embarrassment for 1,600-lawyer Greenberg Traurig. Though largely not itself accused of wrongdoing, the Miami-based firm has recently dealt with the scandal surrounding lobbyist Jack Abramoff and has also seen some partners accused of self-dealing and other questionable conduct.