Jack, I would hardly say it was handled well. The fact that airlines had to divert to other bases is pretty bad and would have potentially have cost those carriers extra money.
And those that were delayed, it may have only been an hour but its an hour that should not have happened. I trust MAN would not be charging any airlines for late departure fees which some airports do.
I agree it could have been far worse, but to suggest it was easily dealt with is questionable.