The aim 1 function is a built in cheat, so the game knows that it isn't allowed (if cheats are disabled I assume; Cheats as in god 1). Like coffee said, 'regular' hacks are separate programs, not recognized by UrT, hence why you can't do an auto kick.....If it were possible, it would already have been done.
I think it's also possible that it's one of those fun things they build in, like /name all or something, renames you to asshat.