So, today I went out with the intention to ride, and Ice still felt a little jittery, which I would attribute to the fact that it was cold overnight and he hasn't been worked in a week. So I decided to get off and lunge him a little bit, and I discovered that he is EXTREMELY stiff on his right side. When I want him to move out, I tell him to move his front end first--basically side pass. Lunging him to the left, he does this well, and he understands what I want.
To the right however, he understands what I seem to want from him, but just can't do it. Even in close range when I stick him in the shoulder with my finger, He first backs up and then moves in the direction I want like he's walking away rather than moving away. He actually has better lateral flexion to the right than to the left, which makes it odd that he can't move away from me with his front.
So, how do I either teach him to side pass to the left, or how do I teach him to engage his front end on his right side?