There's no point even trying to use events (delegated or not) because the simple fact is that (at present!) there's no 'add to' capability built into accordion(), so whatever happens you end up having to run the destroy/create when you append new content. Event handling would only delay (slightly) that command sequence. You already know exactly when you need to do the destroy/create so you might as well just do it there and then.
Of course, you have another option, which is to modify or extend the accordion widget to provide that 'add to' capability?