I dunno. You say he is young? How long has he been free lunging?
Sounds more like a training issue to me.
It would be like me being mad at my fiance's 8 yr old daughter because she didn't separate the colors from the whites before doing her first load of laundry.
Before I blame the horse for being disrespectful, I would take a few steps back and break down the actual task you are asking for into smaller chunks.
When my trainer taught me to lunge my horse; he didn't want me to do in-motion directional changes at first. If I wanted my horse to go in a different direction, I had to stop him first, give him the clear signal of the direction change and then send him around. I would woa Sam from the center of the pen. After a few weeks of that I started sending him in the next direction, but walking closer into him, rather than stay in the middle. So, I taught him the cue to turn around from the stand at a distance and then by moving into him.
Just my thoughts. If he has been free lunging and doing this moving directional change for weeks / months and this behavior just started, well, that's different.
Last edited by AQHSam; 02-09-2012 at 06:34 PM.