He claimed not to sell into existing buy orders.
Yeah, I got that exactly backwards, sorry. Either way, he's adding to the sell pressure which will tend to push the price down.
I did sell some CLAMs immediately before making my first post and didn't tell anyone else about it. I think it was around 5000 CLAMs that I sold. The price had already fallen from ~0.012 to ~0.0075 before I sold anything as I remember it, so it wasn't 3 or 4 in your list that started the price collapse.
That could have been one of the "waves" of selling being reported though. If I recall correctly, at the time most alts were being battered (as they are now) by an inverse correlation with the BTC price rise. So the original (much smaller) drop could possibly have had nothing to do with the digger at all (#1 above), but then one thing led to another. Coincidences do happen.
Yeah, I don't know.
I've had one person accuse me of using "inside information", and that it was unfair that I sold some CLAMs before publishing my findings. I'd counter that the information I found was on the public blockchain, and so wasn't "inside information" at all.