Well, I personally think it's hypocritical if you use hacks in the same way other hackers do, which a lot of admins do. But nevertheless it's their server, and of course they can do what they like. And if admins start to really use scripts to battle other hackers, then we will most probably evolve and create new scripts to battle the admins.
But I would still say they are dicks and hypocritical if they hack their own server and players, but honestly who really gives a fuck and who are we to judge? We're hackers...