I thought about legal recourse but ultimately rejected the idea. I liked the founder, the company, and the accelerator. I didn't want to potentially ruin his dream and muddle his business with a lawsuit. After all, what investor would want to invest in a company that was being sued for discriminatory practices? In any case, he wasn't malicious - just ignorant. I suppose I should have done one better and helped to educate him to what he had done wrong. Instead I just wished him and his company the best of luck.