Although I'm not big into auras - I think misdirection was a part of Ueshiba's aikido. If you watch Ueshiba he often waves his hand around to draw the ukes attention to it. In addition, atemis are utilised to draw a persons attention to another part of the body. Also, for techniques where you go down low, you often have to raise your body first to draw uke up as well. I think there is a lot of psychological stuff that could be investigated.