Should pastors appointed to high level positions be required to step down from their church?

The appointment of a well known pastor to the position of assistant director of evangelism and his subsequent acceptance speech left me wondering if he will be required to leave his church in Georgia. In his speech he stated that he would abide by whatever the EC directed him to do, but at the same time he appeared to be almost in shock at the idea of doing so. Maybe it was the surprise of it all? At any rate, should a pastor be forced to resign his church if Cleveland appoints him to another high profile role? I know the 1st assistant to the GO did not have to do this at the last assembly but maybe that has changed?