Flagging as rude/abusive is the first step, and definitely helps. Just one flag will send it to the moderator queue; six of them will nuke the post automatically.
As @Tensibai notes, questions disappear from the front page and the /questions list once they have 3 or more red flags.
Chat is the best option in the Stack Exchange network for real-time collaboration. You can check the main Academia chatroom and see if a moderator is active there (or at least more users to cast rude/abusive flags). Another option is to report the post in Charcoal HQ; we usually do spam detection, but we occasionally help cleaning up abusive posts. As @rene mentions, you might find some helping hands in the Tavern on the Meta as well.
You don't need ♦ moderators from other Stack Exchange sites per sé; on Academia, they will just be regular users. But getting rid of these kind of posts is something the community can do on its own; it's one of the reasons we have an association bonus.