eagles123, on 2015-February-22, 02:34, said:
if anyone should move it's North - south has already shown their hand
South hasn't shown their hand at all. Presumably the reason for doubling with a slightly off-shape hand was because it is a balanced hand too strong to be shown by a 1NT overcall, and therefore to be shown by doubling and rebidding 1NT. Had this happened, ie had South rebid 1NT, North would have bid 3NT and now they are at the mercy of the opening lead.
Part of the problem is the weird suit-order choice that has been made by East.
On the auction as shown, 2D shows no extras but confirms four diamonds. 3D shows a little more, probably in terms of distibution. a 4351 12-count might bid that way.