Graves new minion push (pull?) mechanics

I havn't actually seen it in action but was wondering if this was possible. Grave's shots now actively hit minions back. If you effectively zone out the enemy adc laner enough, can you then start hitting the minions from behind, making the whole minion wave go further back to your turret with the right play?

Obviously hard to do as your auto's kill the wave, but if you force a minion back enough that YOUR minions then have to move back to aggro. Is there some form of really good freezing mechanic going on here?

If any of the PBE testers can confirm how viable this is it would be nice, thanks.