3♣ showed 10-12 HCP, 3 card support.
I realised I made life hard for myself. The ♠T dropping meant I could have taken the finesse a second time and made it, but where's the fun in that (and it was the last hand, I was a bit tired, cock-ups are more likely)? North could have thwarted it by throwing his last heart on the fourth round of clubs, then I can't throw the diamond at trick 11 to play through his trump holding at trick 12.
What is is called when you can't take a marked finesse, so you shorten your trumps , cash all your side winners, and come to an ending with a trump tenace over the opponent and use a non-trump card to take the finesse?