I know. You're sitting here going 'WHAAA? Endiku doesn't run barrels, why the heck is she here?'

well don't worry! I haven't decided on a new way to injure myself, and am perfectly content with my mad trail riding and roping skills for now ;)
However, I do have a friend who is having a bit of a hard time with her 13 year old gelding, and I was hoping that some of you barrel racing machines could help us out a bit.
So here's the backround. This gelding, Teddy- has always been a notorious hot head when it comes to barrels. You know, typical crazy horse who's rider lets him get away with murder. Dancing, rearing, all of that fun. His rider asked me to help her out, and we spent quite a while teaching him that it was OKAY to walk around an arena like a gentleman, and it was even ok to just trot the barrels or stop right in the middle and go the other way if he was asked to! I'm sure he was very enlightened.
Fast forewards three months and I get another call from her, saying that Mr. Teddy is now having the complete opposite problem. He's running the barrels, but he's being careless and lazy. He's got the speed down alright, running a 18-19 second course (just local shows, y'know. No national champion here!) but he's just throwing himself into his turn, creating a very sloppy skid around the barrel and knocking his shoulder into them atleast half of the time.
Now, I can fix a horse who thinks he's in charge. But I honestly don't have any ideas when it comes to being lazy at the barrels.
My first thought, ofcourse, was that he might be in pain. So I talked her into getting him checked by a vet and chiropractor. He's 100% sound as far as they can tell. So that leads me to believe that she's right, and that he's just being lazy.
Now its your turn. What do
you do for a lazy horse? Are there any exercises that they can do to get him back on his toes? I thought that he might just be getting bored, and so she's been doing a lot of trail riding, slow arena work, and pattern changing with him, but he's still just not motivated. Any help is appreciated, and thanks in advance!