Taking the high road is best in these situations. Be polite and professional; don't leave anything on paper which could disparage your professional image. It'll be made public, I assure you.
I agree with this 100 percent. However, when you read the pdf that Pam attached, it is obvious that they are trying to backpeddle, smear her image, and close the relationship all at once. There is probably no hope for salvaging this client relationship. Therefore, I see nothing wrong with Matt's approach... I believe this kind of response can be done in a "high road" fashion, after all, it
is her opinion.
Now, on the other hand, I would carefully review the comps they sent. If nothing else, for amunition if they do try to take you before the board. Since I am always willing to reconsider if provided with additional information that I did not have when I did the appraisal, I would add those comps, or some of them, to the report
if, and only if, they add something of significance. If they don't, you can add that fact to your response to the MB.
There is one other possibility that no one else has mentioned. You have stated that the loan officer called you back. Does he have a boss? Is the bank or brokerage regulated? Can you guess where I'm going with these questions?