Board Thread:Episode Discussion/@comment-34633327-20180105193053/@comment-69.55.158.20-20180108082123

Another posibility for avoiding retcon with Jaune's power (although this is stupidly OP so I don't actually think this) is if his power isn't "healing" but "Aura Manipulation" and when it activated previously it worked the opposite way. Instead of giving aura TO Cardin he ABSORBED the aura of the punch and left Cardin's unprotected hand punching his stronger aura'd face.

Its important to note that this would be an interesting case of an ability whose main offensive use would be against other humans, since the Grimm do not have aura.

If that is the case, perhaps thats why it takes him so long to heal with it. Instinctively he can use it to absorb aura, but GIVING aura requires more effort. Just like how Ren learned to project his emotional masking over a distance with what appears to be significant effort.