If your lower back cannot recover in 3 days, I would examine your deadlift form. Lower back is a big part of the deadlift, but if it is the only limiting factor in recovery, I would be more concerned with fixing your form to prevent future injury rather than working around it with different assistance movements.
Didn't you write in to Jim about a lower back strain recently? That further suggests a form/flexibility issue to me. I have never seen you pull, so I could be completely wrong. Call it food for thought.