They hold the same keys as the priesthood holders, plus the key for performing celestial marriages...I think they must therefor be the actual true LDS Church.
In your eyes they are apostate, in their eyes they are the only ones who live the fullness of the gospel.
They cannot hold the keys, or the priesthood if they are excommunicated or are practicing polygamy. If you think they are the true church, I suggest you join up before they move to Texas. They have a new temple there and that will surely be their center place. They are also taking some serious heat from the Arizona & Utah pols and judiciary, so now's the time to skedaddle.