We are in similar but a slightly less desperate situation, we we're given the EOL, and placed our lifetime buy, but it was only partly fullfilled. We have found a replacement part in the CMOSIS CMV300. It has the same optical geometry, but it is far from a drop in replacement. I also talked with someone attempting to put together a large enough order to induce TI to make another run. You can email me at joey at joescan dot com.
Best Regards