2NT is strongly forward going, suggesting weak spades. Even if North is 5332 he may have a club holding that will be useful. If he hasn t, 4S seems doomed. If he is 4333, then NT is the strain. I d say this auction typically requests South to evaluate his hand and place the contract.
North expects for a single raise.
As predicted, our aggressive panel tended to drive to game, which seems reasonable given the likelihood of a big double fitter. In BWS, a negative double of 1S requires that doubler hold 4 or more hearts, which explains the downgrade to the pass. The passers who commented emphasized North s auction as showing fewer than 4 hearts. Sorry, folks, but North is presumed to be an expert who knows the system. The division came about because the 3S bidders wanted to keep even higher aspirations in sight.