This was the actual auction:
West: 1NT (15-17, balanced) North overcalls 2♠, spades+minor
East: Double (alerted as "shows a spade stopper") opps now pass throughout
West: 3♥ (I better bid them now, I suppose)
East: 3NT (I also have the minors stopped)
West: 4♥ (I have just decided that my LHO holds KQ10xx in diamonds. Not sure why. I just think this. I also think partner has AKx of spades. Not sure why -- I just do. My hearts can play opposite Kx, so I'll bid them, ditch my second diamond on the third top spade, and then set up my clubs, without having to lose control after the diamond lead.)
East: 4NT (I don't like your stupid hearts.)
West: 5♣ (I still think LHO has KQ10xx of diamonds. I'm still not sure why, but it seems like bidding again is right.)
East: 6♣ (Wow -- you bid 5♣ and I have this many? How can this be wrong?)
West: Pass (I knew that someone had KQ10xx in diamonds...)
Stumble bunnies.

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