Pepermint ship will eat aptasia, the problem people have is they feed too much food and the shrimp would rather eat prepared food. If you cut back on your feeding amount they will eat the aptasia.
But your fish, the flame hawk and mystery wrasse will almost for sure eat the peppermint.

I bought 4 that I specifically watched eat an aiptasia in the store. They're never touched one in my tank. Within days of them going in, I would find tiny pieces of frog spawn tentacle floating through my tank, burning the crap out of anything they landed on....

I would say just rescape your rock to get the aptasia where its accessible and zap it with a needle and lemon juice or kalk paste.