No, I am afraid that Accountants are not the solution. Their roles are defined by their codes of practice and legislation. I have seen Auditors changed when they dared to question items of expenditure and ask for vouched receipts.
I'd be suggesting something along the lines of a professional firm under the legal responsibilites of accountants / auditors be the actual managers of an OMC from the outset (lets call them OMC Management Managers) and representatives of the owners could be added and a 2/3rds majority needed to change to a different OMC Management Manager.
You'd then have firms set up specifically to operate OMC on behalf of owners but with a professional set-up