NORTH
32
9732
A732
KJ2
Q654
T4
J654
Q43
AK87
QJ86
8
AT65
  JT9
AK5
KQT9
987
Dealer: East    Vul: NS   MP Scoring

West

Pass
Pass

North

2

East
1
Pass

South
1
Pass

 Opening Lead Out Of Turn Excepted 

This might have been a routine OLOOT when East tabled first of all cards the A.
However, East asked of the table, and perhaps of North in direction of sounding, such as "My lead?" to which North first responded with "Yes", perhaps meaning such as "Yes, who is on lead here is the prime consideration".
Just after that "Yes", it was a race between East's tabling the A and North finishing with a clarifying "South is on lead."
It seemed to North that East might reasonably have been at least "aided and abetted" in the 'transgression' and exposure to penalty for Opening Lead Out Of Turn Excepted.

The director was summoned and impelled that the A be led and South be declarer, perhaps expecting North's hand to be tabled.
South wondered if proper treatment might instead have been East picks up the A, no penalty, West on lead, South declarer, and the A unauthorized information to South, while not to West.

As it was East won AK and exited a heart.
Declarer won the A and cashed KQ, East discarding a club.
The 9 was covered by West's J and won with dummy's A.
The K was cashed and a spade ruffed in dummy.
East won a dummy heart continuation with the 8, West discarding a club.
East continued the 6, South and West discarding a club.
East cashed the A and West followed with Q.
West on defence had an en passant 6 trump to win.
South ended with 1 spade ruff, 4 diamonds and 2 hearts: down 1 (-100) or about 63%.

In matchpoints on this night for North South the relevant comparison scoring was:

  18>     8-   10-    5-    2     2     2     2     5-   10-          2     8-    7 
50 100 -110 -140 -140 -140 -140 -110 100 ---- -140 50 -100