Marshmallow Revenge

I am betting I won’t receive any sympathy, but I am trolling nonetheless.

At a club IMPs pair at fav vul, I hear my partner open 1♠.  I hold:

 

Shockingly, I hear my Flight C RHO overcall 2NT (unusual, for minor suits)… this, at vul v not.  I double … and, even more shockingly, I hear three passes follow!

I lead a spade.

(Pay no attention to the “N” and “W”, the full names of “East” (dummy) and “North” (I) are correct.)

I see the king in dummy won by partner’s ♠A, and declarer pitches a club.  Partner now plays the ♣Q!  Wanting a diamond switch, I discouraged by playing my smallest club.  Partner gets the picture and now continues with ♦A and ♦Q, the latter won by declarer!!

What is going on here?  Declarer has no more high cards in her long suits than the ♦K and the ♣J.  As declarer thinks and eventually plays a small heart, what are your thoughts?

 

…

 

Well, mine were that while no matter what declarer had, she made an insane bid, I am going to place her with something more than 5-5 distribution.  The play to date is consistent with her holding –, Kx, KT862, Jxxxxx.  So thinking, I rise with the ♥A to shut her from two good spades in dummy, and plan to cash two high clubs and then play a third club to lock declarer in her hand, where she can cash good rounded suit cards, but then must lead a diamond from T86 into my J97 as we take turns being endplayed and I rack up a neat +800.

Following plan, I rise with the ♥A and cash the ♣K, partner following.  But when I play my ♣A, partner follows with the ♣J!  What, declarer actually is 0=3=5=5?  At this point, we have no tricks beyond my good ♦J.  Discombobulated (no, I am not asking for sympathy for this play!), I neglect to cash the ♦J, and manage to arrange to hold ourselves to +200.  Meanwhile, had I exited with a small club after winning the ♥A, we could have gotten +800 that way!