I agree that things may have been too tight for you. I don't know how you can find size 15 shoes, but that's what you need. In the meantime, try wearing two pairs of socks and then a pair of sandals. Yes, I'm serious, but I've found it's better to be a little exposed than having shoes tight on my toes. I've worn my neoprene socks under my sandals in the winter, and it's fine. I have SPD sandals. What a great invention.