“I have taken some time to assess my ability to balance the demands of leading the Rack with the needs of my family,” wrote Rackspace President Lew Moorman in an email to all staff this morning. For a variety of health-related family reasons, he told them, he will be handing off his day-to-day responsibilities to other members of Rackspace’s senior leadership team. The process will take several months, after which – Moorman explained – he will “step down as president and chief strategy officer and assume a much more limited role.”