If you had played the husband and the wife in final hand and they would have lost the tournament because the queen actually did drop, could they have made the same argument? If not, it feels a bit strange that they can make it now.
Tommy Larsson created a system based called Aubyruter which was based on Magic Diamond and Carrotti. It included 1♦ = 8-11 BAL. The system (in Swedish) in on Syskon:
The follow ups to 1♦ are:
1♥ = 4+♥ or any strong hand ...