A picture would help ascertain whether or not its a stuck eye cap, but if it was sever eye caps (like multiple failed sheds) you would know. Either way it was more than likely caused by low humidity, so bumping the humidity up and maybe a soak or two should definitely help. I had the same problem with a dented eye at the beginning of winter when the heating first came on, and just raising the humidity to around 70% - 80% fixed it pretty much overnight.