So I measured it again.
Turn out, centre to centre on the drop part, is actually 62cm (!!!).
You know what, that just isn't a problem :)
To be fair it is a much better compromise than the even wider bar Crust used to sell, bizarrely riding with that wide a bar felt a lots more nature than a wide flat bar.
@Hulsroy started
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So I measured it again.
Turn out, centre to centre on the drop part, is actually 62cm (!!!).