Looking at Tight Ankles

Have an athlete that can't get down into a deep squat?  Heels come up? Knees move in? Or they just fall backwards because they do not have the ankle range of motion in order to keep stabilized?  Here is a good video from MobilityWOD on looking at different ankle range of motion techniques to help improve in the actual squat position.  Kelly Starrett makes some great points about how we look at ankle range of motion in a non-weight bearing position and how we rarely actually spend any time in positions like that (other than possibly swimming).  He talks about different techniques to work in a load bearing position and help restore motion in the ankle.