Since the ceramic is so brittle, while it’s hot couldn’t you give it a quick dunk in water to shock/shatter it off? Not sure if the metal would crack as well. Online search only came up with waterjet as the preferred method for quick removal. Giving it some more thought it may be better to freeze the entire thing and dip it in boiling water that way the shell expands as is shatter vs contracting. It would definitely be safer. Thoughts?