Disk space given back to Mac HD after removing partition, but is not usable
As DavidAndersen noted in his above comment, this was me needing to resize the Stack. In hindsight, that should have been more obvious to me as 839 was not the full size of the TB disk. After issuing the diskutil cs resizeStack F3D44897-0134-4C19-871A-72E258AECDA8 0 command the last volume is at 1 TB. 

    +-&gt; Logical Volume Family 74B7428F-8D10-4BB8-87D3-19B8F73C2844
        ----------------------------------------------------------
        Encryption Type:         None
        |
        +-&gt; Logical Volume F3D44897-0134-4C19-871A-72E258AECDA8
            ---------------------------------------------------
            Disk:                  disk2
            Status:                Online
            Size (Total):          1021952655360 B (1.0 TB)
            Revertible:            No
            LV Name:               Macintosh HD
            Volume Name:           Macintosh HD
            Content Hint:          Apple_HFS
            LVG Type:              Fusion, Sparse