At a certain point, LTC drops below 0.1K$ (before the other 2 conditions, BTC and XRP in this case, happen) => order is being processed for the full $1000, the rest is cancelled (as no budget left anymore).
I don't think this is possible for the exchange: different order pairs run separate from each other. If they would set it up like this, I think (read: this is based on my current understanding, although I'm not entirely sure) it could be possible both orders are triggered at exactly the same time, and you end up $1000 negative.