Yeah, even if the person who passed away was someone the e-mailer was not fond of or who had caused them pain, usually you still feel that numbness of the passing of the person. "As luck would have it" would not be in the top ten ways I would send out an e-mail like this. I feel kind of bad for this person.
I also don't have to work with them, though, and I know how shitty people can be at work. For real.