As far as bypassing the GCD - I spam arcane explosion, arcane missiles, pretty much any of the dps keys I have on my mages/priests like I'm having a siezure... I'd be curious to see how blizzard differentiated this from a macro set to repeat every 25ms since the time between the server getting this would be skewed by latency...

That said, I'm a firm believer that we don't see the full story here on the ban, as I read through this we went from a simple setup of 5 boxing with mixed account ownership to 5 boxing with mixed account ownership using scripting software in the past and currently running on non-supported OS configurations... something which blizzard has banned for in the past (and reconsidered after they did)...