Someone said :
it would be nice if a potential grammar Nazi could write basic english
ah well it's nice to try and nit pick
You are over correcting him here.
His use of "proper" as a flat (or bare) adverb is perfectly acceptable. Equally acceptable of course, and more standard, would be "properly". But the way he used it added an extra layer of meaning, a point about the difference between a grammar Nazi and someone open to colloquialisms.
Other example of flat adverb: "go slow" road signs!
Pow Pow comment on his style was more relevant (his use of question marks, or the comma after "but").
But even then it is only a reflection of his personal style, and does not contradict his request to write proper.
Though I'd have to agree that it would help if his query came with examples.