No matter how well-prepared you are and whether you follow parliamentary procedures or Robert's Rules, there will be times when you run into unforeseen problems during meetings. Personality clashes frequently occur. Board members sometimes get into heated discussions in which accusations are made and perhaps even personal attacks. The board needs to recognize that at times you're going to agree to disagree. There's nothing wrong with that.
Some disagreements are healthy.
Sharing views is what boardmanship is all about. Everyone should have an opportunity to express their views on an issue. However, when temperatures rise at board meetings, the angry board members concerns can be restated politely. Then go around the board table and ask each board member to speak for no longer than one minute on the issue. Finally, the president of the board states his or her view.