1C-1H-7NT

I witnessed this auction in the NAP game on Saturday. So much for scientific bidding. 1C was precision and 1H was 8+ hcp with 5+ spades. And it's another of my bad boards. I found myself on lead with Tx, Txxx, xxx, Jxxx and for some reason chose to lead from the jack, the only lead that gives him the contract. Declarer's hand: AKJxx, AKx, AQ, AKT.