Interesting trick, but I don't think (could be wrong) that's applicable in this instance. I noticed immediately that this doesn't work in the place where you're most likely to see a resize/dimensions-change event: a tablet or phone. When you switch orientation on either, it just resizes the entire page itself. So it's not super useful in the place that most needs it.

Also, though this is much more subjective, I think that really looks terrible. Too much stuff is moving.