I Thought that was this tree...
I have been concerned about its entire 2 trunkedness...
I don't know if you can get these to "Fuse"..
But it seems the wide base is reliant on both those trunks remaining...which means hiding the joint...or getting them to fuse becomes paramount.
At this point...I would find out of you can get them to fuse....(look for older ones and study them, ask...I believe
@Walter Pall recently invaded THG with these....I would trust his knowledge on them for this endeavor if so)
Depending on what you find...
May be letting it grow bonkers for years os called for....
That base is definitely a good attention grabber.....
If a difficult mission to keep it that way, it's the mission!.
Sorce