I'd look at a new method of lunging.
When I lunge my colt this is how I do it -
They must walk, trot, canter (only ever so lightly), calmly go around and have constant ear on me and be listening, I should be able to send them away and hold say the left arm up and point the lunge whip/end of rope/hand towards their inside shoulder to push them out onto the circle. When I asked for 'woah' I should be able to just bend over and put my right foot forward, my head looking at their bum and they'll turn in and stop but NOT coming into the circle, never want them coming at you! LOL.
- Can see an example of the stopping in this video, This is my partner lunging my colt, my partner is still learning but is doing a brilliant job of it!
The only time I ever use a whip is to push him out of the circle (most times I just use my hand).. I use pressure (I don't touch them, of course)!
If my horse kicked me in the face (or got close) He'd have another thing coming, no I wouldn't beat him or anything but I'd correct the problem, regardless if it was making him irritated! He does it, quietly and calmly!! Not that big of a deal :P