hmmm please be careful riding or lunging in the barn. he could possibly step on something hidden in the hay (like an old rusted nail) or run himself in a corner.

what happens when you lunge him on a line out in the open? is he fearful and tries to run away, is un-responsive or just dosnt get what you are asking?

Yea posting correctly sucks if ur not used to it. thats part of the reason i make students who think listening to their instructor isn't important post bareback or without stirrups for a while (hehe)

Keep us posted....