Teaching is coming to an end so there might not be time to discuss this in class. It's a great example for lots of reasons, as an example of a public apology, raising issues about intentions, implications, implicature and, of course, irony, as well as questions about public statements, nonverbal communication, scripted and spontaneous communication, multiple voicing, etc. etc. etc.
And, of course, its status here as 'Johnny Depp's apology' while it seems to be as much Amber's as Johnny's.
More next year . . .