In over a year of playing cRPG I have never seen anyone that I suspected of autoblock. Sure there's probably been some, but I have yet to see a player that I haven't been able to defeat. Sure there are many better than me, Bjord, Phyrex, Paul, etc(The list is looooong), but I can sometimes beat them, and they're just clearly better than me. But none of the hackers that were banned were high profile players known for being consistently awesome. So either they get banned very swiftly, or they simply don't compare to the good players.
I'm sure there will be a lot of hackers banned again in the next wave, but atleast they get banned. And the more they play in the meantime, the more they lose when the ban hits them.
And I can verify that no admin is spectating people that are suspected of autoblocking. It's a horrible idea.