Ride On Trailer My 15 Yr. Old Gelding Is Extremely Barn Sour When Coming Back To The Trailer After A Trail Ride. Please Help!

My 15 yr. old gelding is extremely barn sour when coming back to the trailer after a trail ride. Please help! - ride on trailer

It can barn sour when driving in your house, but was better since I was in the armory of work before or after the trip great. Well, if he was somewhere trailer. It is usually not a problem, get out, your problem is back from the trip. In general, I'm with a group of people and do not always feel comfortable deceleration. Suggestions would be greatly appreciated. Thank you.