Garden saved Buxus doing fine

[Firecat]

filling in nicely--third photo-- that straight root could be removed or bent down into the soil at next repot

A mind reader you are.
Removal I'd agree with.
Thinking of cutting it and pealing the bark about an inch from trunk them removing the knob and pinning the bark back over the wound.
Plenty of time with this one, so a slow pull down through the pot will be attempted first.
Might even get away weighting the root so it bends slowly.
Brittleness and thin bark with these trees make any wiring a very tediously slow process.

Thanks
Steve

[Firecat]

I'm digging up a hedge of these over the Summer. This gives me hope. Love the progression, it's going to be a bonza tree!

The trunk was a fluky find..I hope your hedge has some good trunks hidden behind the branches.
Steve.