So, as our trainer pointed out, Aires is "as green as grass." He's good at walk, trot, turning left, leg yielding, stopping and backing.
Turning right, however, is a completely different matter. It hadn't been a problem up until today. Oh, he's always been more reluctant to bend to the right, but turning hasn't been an issue.
So, here's what he's started doing:
When I ask him to turn right and put pressure on the right rein, he will throw his head up and throw it back and forth, trying to evade the bit. I can shorten the rein as much as I like and put leg on him hard (heck, I was even kicking at one point), and all he does is throw his head around, turn his head the opposite way, and do what he wants (which is generally go straight or turn left). Even trying to get him to bend to the right results in the same behavior.
I am asking him so hard to give to the bit on that side that a lot of times, the bit is actually pulling through his mouth because he's gaping his mouth so far. I put a curb chain on the bit (we use a 5.25" Korsteel eggbutt french link snaffle) to keep it from pulling through, but the chain isn't tight enough to prevent it from pulling through, even on the smallest hole.
Any suggestions on how to get him to respond better on that side? I know I need to ride him more, and I'm working on it. However, are there any exercises I can do with him to get him working better to the right? He's even stiff to that side from the ground (he's always hated anything to do with his right side, really).