The only thing I can suggest is contacting Disney via email or the Live Support feature and ask if it's possible to retrieve the character. I really don't know for sure if the character is completely gone once you delete it or whether there is a certain time period to be able to retrieve it.
POTCO Live Chat is available from 1:00 PM - 10:00 PM ET Monday through Friday and 9:00 AM - 10:00 PM ET Saturday and Sunday and can be accessed here:
https://piratesonlinesupport.web.str...ex.cfm?SVC=455