As I had said before, my style of English has to do with my own sense of aesthetics. "Thusly" seems to me aesthetically pleasing, so I shall continue to use it, regardless of what this cockneyed American Heritage Dictionary editor/writer has to say about it.

In any case, what annoyed me in your criticism was its form, rather than its content. You were, as the phrase goes, "asking for trouble." If I judged wrongly, then I apologize.