Many have now responded to the Coptic fragment. Several of these responses are very well thought-out. Top of the line, I think, goes to Francis Watson, who compares this tiny fragment to certain sayings in the Gospel of Thomas and concludes that this text is probably a modern forgery of someone copying from the Gospel of Thomas. Peter Williams, a brilliant scholar, has also chimed in. Here are some links to others:
Each of these make helpful contributions to this discussion.