delam: How do I fix this?

The center of the board near the stringer has a decent sized ding and the areas around that ding is soft. Should I sand around the soft layer, cut it out, and apply resin to act as a glue substitute in order for fiberglass to re-stick to the foam?
A new type of ding which I do not understand how to fix, and I would like to use this board again since procrastination has been getting the best of me.
A new type of ding which I do not understand how to fix, and I would like to use this board again since procrastination has been getting the best of me.
