Someone mentioned it on this thread, and I pointed it out in another. You ban the push play for short yardarge, you're on a slippery slope per allowing the pushing of your teamate for additional yardage.
The simple solution is to make pushing your teamate forward for additional yardage illegal. Then the play would become nothing more than a QB sneak. That said, as we all know, the NFL is about making money, and you can throw common sense out the window when it comes to rules because the NFL can do anything they want when it comes to their game.
Anyway you cut it, there has to be some tecnique with Hurts in that position because if you think about it, you line up in that formation, everyone knows whats coming, and yet they still seem to make the play successful. Why put your supposedly most valuable asset in that position and why not replace the QB with a RB or FB for that one play?