You're not allowed to move between enemy models or an emeny model and a piece of terrain, unless you have a clearance of at least 5 inches. So when you break from CC you need to move away from the enemy. Although, you are able to declare another charge off of the break away.
Just to clarify this: the charge must be to a model that you were NOT in CC with at the start of the action. IE, if in CC with model "A", i can break away and charge model "B", but not back up 1" and then charge model "A" again in the same action. However: I can break away from "A" to charge "B" in action 1, and then in action 2, break away from "B" to charge "A" again (different action).
Plus there is the rise in insurance, the body work, man hours lost due to injury. Frankly it's a wonder the corproations go to war at all.