Posted 2012-September-18, 23:45
We probably need to know the jurisdiction as bidding box procedures are governed by local regulations. In some places, for example, it is correct procedure to leave the bidding card indicating the final contract on the table throughout the play.
In Australia, I don't think 1♠ on the final board would be considered a "made call" as it hasn't been "removed from the bidding box and held face up, touching or nearly touching the table; or maintained in such a position as to indicate that the call has been made" during the auction period (n.b. "during the auction period" is not actually in the regulations, but I think it's implied). I would then turn to East's double which we may be able to treat as an "unintended call" under Law 25A in which case it is withdrawn, as is South's rebouble, and East replaces the double with a legal call and everything proceeds. East's attempted double is AI for NS and UI for EW. Similarly, South's attempted redouble is AI for NS and UI for EW.
Disclaimer: The above post may be a half-baked sarcastic rant intended to stimulate discussion and it does not necessarily coincide with my own views on this topic.
I ♦ bidding the suit below the suit I'm actually showing not to be described as a "transfer" for the benefit of people unfamiliar with the concept of a transfer