He hunches forwards, then brings his back parallel to the blade and puts his calf in front of Sol's hand to prevent him from changing the blade's position. Sol can't immediately change the stab's trajectory, and Ido just has to hunch in mid-air, which he way already doing the the previous post when he threw the elbow strike, and turn another 45 degrees while stretching his right leg backwards. Pretty easy and fast to do. That isn't necessarily a dodge - he still gets hit - but the attacks goes against his ribs, not inbetween. Considering how little power and speed there will be in launching an attack from prone position, where it is incredibly hard to engage any muscles but those of your arms, i'd say his ribs would stay intact.