There's definitely upside risks if the news is good.
You're quite wrong though that Quindell priced in now as a complete write-off. You're confusing the MC of SGH at acquisition time - Quindell purchase price. MC at acquisition SGH was rated a successful high growth stock. No more. If Quindell written down 50% now, debt covenants will require a CR and/or other drastic action. If Quindell written off completely (unlikely), sp would be single digits.
Good luck with your trading. I have the luxury of not worrying about SGH either way.
SGH Price at posting:
64.5¢ Sentiment: Sell Disclosure: Not Held