Team work and team dynamics

Understanding how teams work is extremely important from the point of view of team dynamics, but when a team member has a life changing event how should a team respond? Should the team keep it's focus on the team task / goal or should the team re-evaluate the team task / goal based on the change in team dynamics? And if the team should change it's team focus how does the team include or exclude the team member that had the life - changing event? (Life changing events could be a death, divorce, change in family (birth), new college degree, etc.)