Surely not! At the vulnerability, opposite a passed partner, to bid 1spade is just foolish, after all, it doesn't even indicate a good lead. The hand comes from a teams of eight match where one intrepid player did indeed bid 1spade - details of how that fared follow. Assuming you Pass, your left hand opponent bids 2NT and this is raised to 3NT. Your partner leads the heart10 and you see:             Right Symbol  

"Thank-you, partner" says declarer. "Play small, please". Plan the defence.

Down Symbol