When a horse is disrespectful and pushy on the ground it is only a matter of time before they become disrespectful and pushy in the saddle. Many novice riders are a bit oblivious to what thier horse is doing when they are on its back as long as the horse is going in the right general direction and about the right speed. Problems like this don't just appear, they happen incrementally over a period of time until they reach a point that can't be ignored.
When I take a horse for training I work on ground manners before I ever ride the horse because they don't differentiate between riding and leading. If a horse is light and following your feel on the ground then the horse will be light and following your feel in the saddle. Almost every horse will lead just how they ride. If the horse is high-strung and super sensitive or lead-footed and hesitant or calm and willing, you can expect that once you get astride of them.
There's nothing like the Rockies in the springtime... Nothing like the freedom in the air... And there ain't nothing better than draggin calves to the fire and there's nothing like the smell of burning hair. -Brenn Hill