Can a partner remove you off of title it is a common tenancy title. Do the courts have to let me know.

I assume that you and your son's ex are tenants in common, not partners, and that you are using the term "partner" is the colloquial sense.  Your son's ex cannot simply sell real property that she owns as a tenant in common with another.  If one tenant in common wants to sell and  the other doesn't, and tthey can't work something out, all she can do is sue for partitiion.  In a partition action it is theoretically possible that a court could order the place sold and the proceeds split, but you haven't written anything in your question that makes that appear likely.