I guess you can try requesting deletion via the contact form on one site and mention that you want to be deleted network-wide. Not sure if it'll be done though.
@probablyPekka I've passed it to Jin and Jeremy -- personally, I'm a bit "meh" on it, but if someone can think of a way to make it look and work okay, I don't have a problem with it either
@DIMension10 If you want to play around with MSO answers and formatting, please use the sandbox. It's rather annoying to see a regular question bumped, only to discover that you're fooling around with it.