okay, enough ranting about what's past.
in all seriousness, what is our stop-loss here? the calendar is down over ~40-45% currently...are you looking to close out down 50%? 60%?
with two back-to-back up days in the markets, and the increased volatility all-around, tomorrow could be painful for this trade.
it seems the options are 1) continue to wait
2) close the trade and cut our losses
3) close the 410 put calendar and open the 400 put calendar - though I'd really hate to throw any more good money after bad, and the P/L graph doesn't look favorable anyway.
so it seems the logical thing to do would be to close the trade now, or at least have a maximum loss target in mind.