Agree - with a video I’d do the repair myself If it’s a matter of swapping the control box.
It’s doable - I’ve had the decks and skid plates off to look at the internals. I disconnected the footpad sensor cable from the control box - ezpz. I suspect that removing the cables that connect the battery and the wheel motor are slightly more involved but look pretty straight forward. That said, if it’s 500 units and the cost to ship and repair is $500, that’s a pretty easy business call to eat the cost and have happy customers.
I suspect they are looking for a cheap firmware fix on this and that’s part of the delay in dealing with the issue.