redirecting units past armies, pretty gamebreaking

Been hitting this on EU a bit, some guy masses zealots then redirects them to a friendly base somehow and they collide with the wall, and then go attack your PF after an army leaves and goes right past it. Its easy to time because you can see when your allies army moves out

3:20 NoNǂSuwa Use ability 17f40; target: Drone (100cc) is the action in the replay that he does to redirect the zealots, not really sure what that action is or how he does it, but in the replay all the zealots got a red arrow pointing to his allies drone.

Heres the replay

blue wrote:

Been hitting this on EU a bit, some guy masses zealots then redirects them to a friendly base somehow and they collide with the wall, and then go attack your PF after an army leaves and goes right past it. Its easy to time because you can see when your allies army moves out

3:20 NoNǂSuwa Use ability 17f40; target: Drone (100cc) is the action in the replay that he does to redirect the zealots, not really sure what that action is or how he does it, but in the replay all the zealots got a red arrow pointing to his allies drone.

Heres the replay

Manually targetting the charge ability I believe