Clear Mind - Frees an ally from any Disorient, Hold, Sleep, Fear, Confuse, and Immobilize effects and leaves them resistant to such effects for a good while. Also, grants target clearer Perception to see hidden foes.
Every singly one of those things has to do with the mind. Hold and Immobilize? Anyone who has experienced night terrors would likely agree. How does Perceptions fit in? Ghosts, shadowy figures, manifestations, etc can be argues to have less to do with vision and more to do with the mind's ability to perceive things that we cannot make sense of.
And when it really comes down to it, every nerve in our body has one common connection, the brain. Anything that has an impact on the brain can affect the body. The only reason to call the powerset 'Healing Aura' would be if the player chose to forego the non-healing powers or just used the healing powers in the set to 'rock the aura' in which case they should automatically be renamed to Healbot-#####.
QFT