The manager will have to see that the team member is removed. Reassigned if that's most appropriate, discharged if the situation calls for discharge. Prior to taking action the manager needs to discuss his pending action with the other team members, collectively if possible, and try to gain the team's consensus for the action. Failing that, the manager might take action or if he decides that the team wants to carry the poor performing team member, he may want to let the situation ride. Manager's should keep in mind the fact that it is highly unusual for a team to assume any responsibility for deciding to remove a team member.
Management can be a very lonely job.
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