yes people have thought of that. this was a rumor that was going around before. I havent been following all this drama lately but I think the final conclusion is that the mh was simply detectable. I think the new anti cheat system detects the injection of .dlls and can be updated on the fly if something new comes along. The hack was made by netter and some members here are friends with him.
~edit: beat me to it :doped