Interesting stuff! Analyzing Spielberg's blocking is always worthwhile. I would argue, though, that the axis is NOT broken at 30:07 -- it's re-established, in a great moment of surprise for Hooper and the viewer. When Quint grab's Hooper's hands his eye-line is right-to-left. In the next shot -- the one marked "Axis Break" -- it begins, on-axis, with Quint's eye-line continuing right-to-left, but Quint suddenly swings Hooper around to his left, in the same shot, creating a new axis with his eye-line now traveling left-to-right. Continuity is always maintained, but the shift in axis is used to great effect. A really clever, and simple trick there. Anywho, thanks for the video!