Watch the actual game film and not just the angles and coverage you get from the ESPN highlites. Then, you might notice not only West leaving his man for O'Hanlon to cover but also the CB getting beat on the other side on a nice post route while the weak side safety backpedals to...somewhere totally out of the play. So...which of the two guys does O'Hanlon cover? Leaving a guy naked out there and then riding him for a blown coverage is real bad form. Want to ride somebody? Start with the CB's. From what I can see, neither one provided consistent lock-down defense on the VT receivers.
Looking at the entire game, it appears to me that one of the main things that got drilled into the defense was to contain Taylor...not let him scramble and get outside. Make him beat you with his arm and not his legs. Throughout the game, whenever Taylor looked like he might take off, corners and LB's were breaking coverage to stuff him and leaving receivers matched up with 1 on 1 coverage from the safeties. It worked okay for the majority of the game since, let's face it, Tyrod Taylor is NOT the greatest passing QB to ever hit the field, but even a blind squirrel finds an acorn once in a while if he looks long enough.
Unless everything went absolutely perfect for the entire game, both safeties were pretty much screwed from the start.