Violent Behavior Covered under ADA?

I just found this article about a recent case where an employee's violent behavior was excused under the ADA because of her bipolar disorder. The employee was irritable and moody towards her coworkers and because of this was asked to attend a meeting with her supervisor to discuss ways in which she could alter her behavior. During the meeting, she became outraged, yelled at the supervisor, slammed the door, and began throwing things around at her desk. As a result, she was fired from her job and she sued the company, saying that they should have accommodated her violent act because of her bipolar disorder. The courts agreed with her, based on a previous case where the employer was held to be in violation of the ADA in terminating an employee whose Obsessive Compulsive Disorder made it difficult for her to follow attendance and punctuality rules. After reading the article, how do you feel about this?
Clearly the article is opinion based, and clearly the author feels the court made the wrong decision; however, do you think that a violent act (assuming it does not put anyone in direct danger) should be covered by the ADA if an individual has a disorder which makes them prone to mood swings? I myself have mixed feelings, I understand the court's argument, but I feel that attendance problems because of a mental disorder are somewhat different than subjecting other employees at the company to the threat of working with someone who could potentially act violently. Do you agree with the author's point when he says that this decision could create a "slippery slope" where employers must accommodate other inappropriate actions simply because they are a symptom of a mental disorder?
I also am wondering why this employee was not taking one of the many available drugs that can treat the symptoms of bipolar disorder. But then again, if she had been, would she be considered as "disabled" by the courts?