In the future, you really should choose a wet-tan, on a "young" skin like that. The rigors of the dry tanning process are a little much on ears etc.
A ionic bond is not the strongest of bonds, so lets see if we can reverse it some.

In 3 gallons of water, add 3/4 lb salt, and 6oz of baking soda, at 90degF. Let the cape soak in this solution for 30min, with light aggitation, then pull and rinse in plain warm water for 5 min, while aggitating well. You might also need to re-oil?
Let us know if this works.