How Do I send User Created Post From One Wordpress To Another?

Hey guys, the user sync plugin is Baller! I love it and it works very good. Another question however, on a multisite lets say a users creates an article, and I want that article for a custom post type to be published on a different website under their username, how would I make that possible?

So really, when they publish a custom post type which is GTCD articles, it will publish to their multisite website and Our main website which is not in the network but on the same dedicated server.

Possible?