Here is a hi-res detail of the crack. I cannot say that is has widened very much (still about 90 meter), but this image shows more clearly than before that is runs more or less straight through and beyond the band with ridges.
I agree that the "flexural" crack is not widening, nor lengthening, quickly (relative to the speed of the ice flow in the PIIS). Thus my current concern is that by about next November (2015) the ice shelf will have flowed downstream sufficiently that a new compressive strut would form (see attached image, and Replies #221 and #225) from the compression introduced from the inflow of the SW Tributary glacier, so that by Nov-Dec 2015 (or later) a new crack might form roughly parallel to the current crack, and that when the new crack ruptures it may kick-out (see panel b of the image) sufficiently to cause the current "flexural" crack to extend (abruptly) sufficiently to connect with both the "shear" cracks at the northeastern tip of the notch and at the southwestern corner. If so, then a major calving event could occur with the new iceberg (B-32?) moving seaward at the southwestern corner and rotating about the submerged pinnacle (near the mouth of the notch), and if such a calving event were to be energetic enough, B-32? could become unpinned and float away.
If B-32? were to float away, it could provide enough room for a tidal (vertical bending) induced second calving event (B-33?) possibly before the end of the Austral Summer of 2015-2016, with B-33? splitting away along the postulated second "flexural" crack. If this second calving event were to occur, it would partially (possibly by 50%) reduce the buttressing action of the PIIS against the SW Tributary glacier (which would then accelerate; which would eventually influence the shear strain along the northeastern shear margin of the Thwaites ice stream).
It is conceivable, that this second type of calving could happen repeatedly in coming years(possibly producing future B-34, 35, etc icebergs every say 2-years). If so this would keep the buttressing action on the SW Tributary glacier low for many years; which might then contribute to an acceleration of the Thwaites ice stream velocities (particularly if the Thwaites Eastern Ice Shelf continues to degrading in coming years due to the continued advection of warm CDW in this area).