The 6♦ bidder caught a 6=2=3=2 bust but it was enough to score up +1090. 6♥ is -500 (I think - no more than 800 do not remember for sure)
The doubler stated that 6♦ took a long time to be bid, which might have induced the x and certainly deterred 6♥. The director was not called.
Personally I thought that the 5♦...6♦ bidder is 'walking the dog', but if this is the case, 6♦ needs to be made in tempo. While my bridge judgment does not matter, I think this was a likely 73D2 violation.
What do you think?

Help

1♣# - 2♥ - pass - 4♥;
5♦ - pass - pass - 5♥;
6♦* - pass - pass - x
# - strong club (pass is probably some sort of negative)
* - supposed long tank