Because the signer MAY have POA or is executor or other instrument of ownership that obscures onwership idenrification but gives selling authority.
Obviously, you are provided ONE distorted side of the story.
#10 indicates you have ALREADY consulted an attorny. Why are you here?
#4 suggest YOU have a real estate professonal. Why are you here?
My first inclination is the cause of all of these malfuntions is as close as your fingertips.
You seem to enjoy the aspect of playing all sides against each other and second guessing the all.
Stick with the consultation of those YOU HAVE HIRED and abandon solicitng the opinion of strangers from the internet. It will not serve you well.
As a Realtor, I am bound by the National Association of REALTORS and to their Code of Ethics. I have responsibilities and duties to my client (especially honesty), here is a link to the Code of Ethics, http://www.realtor.org/mempolweb.nsf/pages/code#Duties%20to%
it is important you make sure those were upheld by the real estate professionals in this instance. The notes you have 1 through 10 carry some very serious implications for a licensed Realtor both with the Code of Ethics and with the State Real Estate Law. If you are not dealing directly with the Designated (Responsible) Broker of the firms you should be.
I do agree with Sally and think terminating the contract is in order.