I'm not sure how much help you can give me with this, as it is a lesson horse and not my own, but Charlie (the horse) can be really rude on the ground. During my lesson yesterday when I was holding him just before the lesson he kept nudging me with his head, and when he was tied up in the stables (it was raining outside) he kept swinging round and kicking out. I know it was because he didn't like being in the stable because when it stopped raining I could take him out and he was better, but I don't think horses are supposed to be like that? He also tries to kick when I pick out is back feet when I don't let go or if I have to I will pick it up again to try to get him to understand that I am not going to go away. He will have his ears back a lot and look really annoyed at everything often as well. He is always trying to pull back when he is tied to the stable door and bites at the knot to try to undo it. When I lead him out of the stable it always feels like he is in control, luckily he knows that we are only going in a circle to be tied up to the stable door, but once or twice he has wanted to wander off and I feel like I can't do anything.
He was in a bad mood yesterday so maybe that was it, and I don't know how much of that is normal behavior as I don't know may other horses, but I just want to know if there is anything I can do to discipline him. My instructor pushes/pokes his muzzle away firmly, and other people will hit is shoulder when he is being pushy but I don't want to do something like that and be told off because I am not very experienced (as you can probably tell).