How do I cancel an operation in alpine email client?

Occasionally when I'm doing something in alpine, I'll forget and do the wrong thing (like open up my gmail folder when I meant to open my *other* IMAP account). Then I have to wait for a few seconds for everything to finish. I want to be able to cancel the operation and go to something else, but Ctrl+C doesn't work. Is it possible to cancel the current operation in Alpine?