Don't get your hopes up.  I severely doubt much will come of all the refund talk.  If you want as much money back as possible, I'd push for selling the Titan.

When I bought my shares, I believe Bitcoin was ~$550.  It is now ~$370. So, Bitcoin is only worth 67% what it was at the time of purchase.  So, if you were able to sell your Titan for 67% of the initial $10,000 cost (so $6,700) you would theoretically end up with the same amount of Bitcoin as before your purchase.  A quick check to eBay shows that they'll probably sell for around $4,500.  You can work this math further if you care.

Me personally, I just say let's let them mine.  The miners do seem to be getting better with firmware updates.  Also, no other vendor has yet to ship a scrypt miner anywhere near the efficiency of the Titan, even with the higher-than-stated power consumption.  This may change once the Antminer L1 ships, but that is still about 2 months away (if even).  The GAWminers Vaultbreaker has basically disappeared off the face of the Earth.