Thanks Don. I told the guy I didn't feel comfortable handling the situation and said I'd put some feelers out there and if he didn't hear from me it's not b/c I'm ignoring him, it's b/c I couldn't find anyone that I felt comfortable with recommending to deal with it. Take care.
Cheers,
-Rick.

Rick, the way you describe this, it sounds like a Real Estate situation. If that is the case, you would probably be better off asking for referrals at the offices of the local Real Estate Association. They are in the best position to know who specializes in these kinds of arbitration or mediation issues, and specifically within that jurisdiction.
It does not sound like a transactional issue, although it could turn into that, down the road. As a Broker - and I am not an Attorney - but I would be careful not to get in the middle of something like this because, just as you state, like you, this would be beyond my "core competency". This could get real legally involved and real ugly! I would keep an arms' length.

Web reference: www.bafgroup.com