If churches in these hierarchies cannot get pro bono legal help, they may well spend far more trying to save their property than it is worth, or than they ought to spend holding on to it.
"Let goods and kindred go,
this mortal life also.
The body they may kill;
God's truth abideth still.
His kingdom is forever."
It may be disappointing to lose a precious piece of this world. But what profit is there is gaining the whole world, if in the process you lose your soul--something made very likely when the truth is sacrificed instead of "contending" for it.
And that, people, is the story of these mainline churches. They pitied and mocked the ones who left with nothing many years ago. They built bigger barns, and more beautiful properties. And now they too will lose those, and much, much more.
They want to go back... to the 1980s, or 50s, or whatever (times of deep declension, all, which is the greater irony). They have no real "place" to return, because they have nothing timeless to retain. There is no "going back," there never was, there never will be.
The key to Reformation is laying hold (or strengthening your grip) on the permanent in the present era. The reason the past often looks attractive is not because of the accidents of history, but because they were holding on to something that has since been lost. So even in an era like the late 20th century, there was not much in the mainline, but there was a little more than today. Some can tell the difference.
In the end, most will stay with their hollow property. Leaving, they will have little to hold them together, because they have no desire to find the ones who departed 70 years ago (OPC) or 35 years ago (PCA). A few may want to join the EPC, the "last generation's presbyterians." But in the end, there will be no great exodus.
2 Ki. 20:19 Then said Hezekiah to Isaiah, "The word of the LORD that you have spoken is good." For he thought, "Why not, if there will be peace and security in my days?"