Thanks all for the replies. A disastrous situation it is.
The property was received as an inheritance and a large extended family that has nothing to do with each other now owns it individually with no agreement. Most of us want it sold, but this same relative, who had been the trustee of the trust before the deed was transferred, signed a long term lease with his friend at about half the market rate while the trust still owned it. Now, it cant be sold for real value as long as that tenant is still in. If this tenant's lease can be broken, most of us would be very happy. However, this relative is trying to run the show as if he owns the place and his friend obviously goes along. I want to stop it. If i require the tenant to pay me directly and he doesnt, two weeks later, his lease is terminated and the building can be sold. The only question is if that will work.
BTW, the property is in CA, so its not much better.
Thanks