The article fails to mention Benjamin Franklin and John Adams were the other two members of the committee charged with drafting the document. Producing a hard copy in those days was a real chore, and probably only done in order to present a working document to the full committee.
So did Jefferson make this change on his own, and take the extra care in changing the words so the rest of the committee wouldn't notice? Or in discussions with Adams and Franklin did they all recognize how momentous the change was and expunging "subjects" was a kind of ritual?