doesn't like to be alone?

I understand my horse not liking to be alone when he's not being ridden, and trust me he has a girlfriend and everything.

However my mom went out and rode him yesterday and told me that he was stomping his feet while she was grooming him and when she rode him in the ring, he was being a real ass. She described it as, him just being head strong and constantly pulling and always stopping at the gate.. Now I know my mom isn't the best rider so I could probably get him smartened up.. but I'm moving him in March and I don't want him to act like this if I go to shows, also when we ride with other people I find he tends to either race them or tries to follow them ..

Is there any thing I can do ? I know ground manners aren't a problem for him and I because I have established with him that I don't let him act up with ground manners, but I really don't want to be in the show ring next year and have him acting like this, let alone ride in a differnt ring without anybody.

Oh yeah, and he trailers alone perfectly fine .. It's so confusing!!
(sorry for the long and kinda jumping all over the place questions)

Does he act like this with you? He may just be testing your mom. Does she ride him very often?
He may act perfectly fine with you in the ring...hes just being testy with your mom.
Is he kept with other horses? Another idea is to seperate them. Whenever I notice my horses are getting VERY attached to one another I will seperate them. You want your horse to bond to you and not another horse. Then when you take them out...they will be willing and happy to go with thier buddy(YOU!) Just some ideas

Well I haven't ridden him in so long due to a sickness..
However the last time I did ride him I could feel him constantly trying to be with the other horse in the ring .. but his ground manners with me are perfect .. He has been a herd horse for all of his life until I bought him last summer ..

You need to gain is focus on you. Work with him everyday. Have him bond to you. Seperate him from any horses he may be with for a week or two and get him to really bond to you. Then work him through this. If his main thing is wanting to go out the gate...make him do some turns or sidepasses,backing by the gate...just get his mind off getting out the gate and focus it on you. Then, when he relaxes and starts to drop his head and give in, make sure you stop and reward him. You need to make sure he knows what you are asking of him and what you want. So, when hes doing it wrong make it hard for him(work him,back,do transitions ect) and when hes doing it right, make that really easy for him, give him praise. Just some ideas

Ah thank you :) you have no idea how that helped.
I barely get to see him this winter because he is so far out there at my moms boyfriends house and I hate my moms boyfriend, but when I move him in Febuary/March I will work on this :)

Sounds good Just keep at it. Im sure you guys will click and bond. Keep me updated on his progress

i will i will :) he's so out of shape right now so when I get my camera i'm gonna do before and after pictures too after our bootcamp :P