No, this has nothing at all to do with the 'C' Anerythristic. Completely different bloodlines and the 'C's have nothing at all to do with Lavender.
Best I can figure out is that the Lavender/Anerythristics mostly lean towards the Lavender appearance, but there is a subtle difference in appearance. Matter of fact, I have been producing some Lavender Motleys over the last few years that I strongly suspect may be Lavender/Anerythristic Motleys. Since 'A' Anerythrism has popped out of those clutches pretty regularly, I think it's pretty safe to say that this is probably what I am seeing. If I can find them, I believe I have some photos showing the difference in those motley forms.
And going out on a limb here, it's entirely possible that the difference that Tim Rainwater saw in some of the Mocha/Lavenders could quite possibly have been because he was looking at some Lavender/Anerythristics at the time. Quite certainly 'A' Anerythrism was infused in the Lavender line from the very beginning, so this is quite plausible.