There are a number of issues that could apply. Some probably are state law specific, others could be against the REALTOR COE if not followed. My suggestion is to move on, unless you can get some inexpensive local legal advice.
Our COE:
http://www.realtor.org/mempolweb.nsf/pages/codeDuties to Clients and Customers
Article 1
When representing a buyer, seller, landlord, tenant, or other client as an agent, REALTORS® pledge themselves to protect and promote the interests of their client…
Standard of Practice 1-5
REALTORS® may represent the seller/landlord and buyer/tenant…
Standard of Practice 1-7
When acting as listing brokers, REALTORS® shall continue to submit to the seller/landlord all offers…
Standard of Practice 1-9
The obligation of REALTORS® to preserve confidential information…
Standard of Practice 1-13
When entering into buyer/tenant agreements, REALTORS® must advise potential clients of:...
4 ….any potential for the buyer/tenant representative to act as a disclosed dual agent, e.g. listing broker, subagent, landlord’s agent, etc., and
5 ….. the possibility that sellers or sellers' representatives may not treat the existence, terms, or conditions of offers as confidential unless confidentiality is required by law, regulation, or by any confidentiality agreement between the parties. (Adopted 1/93, Renumbered 1/98, Amended 1/06)