Hmm... First, please accept my apologies as I thought that was a link to an _internal_ wiki page here on dual-boxing.com (/kicks self for not exploring the link fully). As it was an external wowwiki.com link, I can't vouch for it having a bent toward multiboxers (in fact, it did NOT look like it was multiboxing-friendly when I went back and looked again briefly).

Try this search instead. With 10 pages of mac multiboxing threads there oughta be at least one tip which will be helpful.

I'm also unclear what you're talking about specifically when you say "drag my screen back." Could you rephrase that in technical terms? I.e.: is it dragging the WOW game window back to a particular desktop instance or monitor? Or what? If it's dragging the wow window to a particular instance, that might be the result of maximizer trying to put both copies in the same display, which is fodder for a different search, e.g.: googling "site:dual-boxing.com mac maximizer" or similar. Are you running it in windowed or full-screen mode?

Hope that helps get you moving in the right direction.