Hard to lead from the pasture

Recently I have seen posts lamenting how their horse is great in the round pen or arena but resist, sometimes very hard, when attempting to lead them from the pasture where their buddies are, especially if the weather is bad. All to often the solution attempted is to put on more pressure, stud chains, lead by bit, war bridle, etc. This is such a common problem, have seen folks having issues with this ever since have been involved with horses. Here are some thoughts on how to overcome this.
Seems to me there are several things going on with this. First , putting a more severe appliance on the horse causes him pain when you try to lead him away from his buddies, and therefore violates a principal of working with horses, the horse can't get hurt or be afraid of our tools. The pain just convinces him he is right to be resistant, it's dangerous when you take him away from his buddies. Next is the idea that the horse is worse when the weather is worse, they are sometimes a little friskier on a chilly morning but in general they really don't care much about the weather, that is mostly a human thing. When you catch your horse in bad weather you are uncomfortable and want to get out of there, the horse knows you are uncomfortable but has no understanding of the source, so he interprets this as fear and reacts accordingly, reinforced by the painful halter set up. We tend to think that the horse is situational in that we have control in the round pen or arena but not in the pasture. In reality it is us that is situational and the horse reads this, we do not behave with the same body language once we leave the round pen and ergo do not get the the same response. Since all is well in the controled circumstance we need to practice the same things out in the open we do here, lounge with lots of transitions, yield hindquarters, shoulders, flex, back up, all the same things, right there with his buddies, with the same language, no mater what the weather. Than lead him off and let him rest. Falls in the category of "make the right thing easy and the wrong thing hard", but mostly the horse knows we are the same everywhere as we are in the round pen.
When we are as proficient in all situations as we are in an enclosure, our horses almost always are too.