Not really, since knowledgeable players could tweak the module txt files to remove any restrictions on third person you add. It might be annoying enough for people that they wouldn't bother, though...
You might ask: why don't people mod their txt files to "cheat" in other ways then? Because most other things you'd want to cheat with are controlled by the server - you could change what you see, but it wouldn't make any difference to the other players, just confuse you. The first / third person view is one of the things entirely client side, due to how most 3D games work.