Can anyone help please? Daughters normally fairly lazy pony showed some rather extravagant airs above ground yesterday on a XC clear round. Totally chilled out on arrival, in warm up and out of warm up box and most of way round course but watching him come to last few he turned into a different pony, yanking head down, leaping into air at not being allowed to go faster etc. He took a massive leap over a log on a downhill slope and took his chance to get going but daughter pulled him up at which he leaped several times and then bucked and daughter fell off. She has now taken a real hit to her confidence as he has been great for 6 weeks and not put a foot wrong except once when he turned a canter round field at home into a gallop and a few bucks for good measure!! Pony is a been there done that PC school master and I think that he did get frustrated that daughter was making him trot and when she did give him rein to jump he was then pulled up and not allowed to get in with it. He usually wears a hanging cheek but did come with gag which i put on to give extra brakes which did work. Tried to explain this to daughter but she said if she had let him go he was going to really go, probably harbouring memories of previous gallop/bucking in field and why we both felt going slow was sensible around the course this time. It was the explosion of energy once he did get let go (taking the big leap over a tiny log coming down a slope which set him off) which was scary and has now made me very wary of sending them out XC again. Any tips to control this explosion / getting the balance between going forward but being controlled? It is all new to my daughter, she is young and still learning obviously but am a bit disappointed at ponies reaction and don't feel I can trust him now. I can see lots of XC schooling days on the horizon!!!!