As it turns out, I had TERRIBLE contact from the Coosa to the exterior skin. I made the mistake of rushing to bed the coosa in the coring compound right after two (2) large 1708 glass layups after MANY hours. It was in the late evening/early morning and knew I should have waiting till another day. Oh well, everything is repairable with fiberglass, right? Just throw more $$$$ at it. HAHAHA
After much thought of a repair and having to fill the void with Arjay transom pour, I decided to pry it off and redo it again. Thankfully, it had very little contact (only at the top) and after cutting the fillets at the edges with a multipurpose blade, it let go fairly easy using a pry bar stuck in the corner pocket.
Pictures AFTER Coosa was pried off:

