There were 14 seconds left. Pretty sure it was impossible for him at that point.
Didn't Morrigan have most of her health? It's actually possible to fist-chain a character and take him from full to 0 if you time the shots just right. The chances would have been almost nil, but what does that matter? You just DO NOT give up a game in Grand Finals, no matter how hopeless. That's a quitter's attitude.
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Twostuck, Homestuck RPG: http://www.gamefaqs.com/boards/8-gamefaqs-contests/62168402