"All things godlike run on light feet" - Frederick Nietzsche
Anyone who is supremely fluid technically, lets go of the need to control technique. They simply do without trying. This is the great study of technique - to do all by doing nothing. The paradox is - the more we try to control, the less control we have.
Wanting control over any situation is triggered by the fear of losing control over the situation. Tension is a physical manifestation of fear. Tension makes movement difficult, which then incites more fear in the player. More fear = more tension. It's a never ending cycle. When we relax our mindset, and stop fearing our loss over control, the body relaxes and control begins to happen naturally. This is a simple, but profoundly deep study. This is "playing" the guitar.
Watch any guitarist with fluid technique and notice how light and playful the approach is. Realize this comes from a mindset - it's not just a physical act - it's his or her mind being represented by the body. When we fully grasp this concept, all technique becomes a study of letting go of fear and control. Only then can the body be free to do what it does naturally and beautifully.