sell depth thinning, page-5

What he probably means is, even though it followed into start of trading
there was agressive build up of sellers just before the open, and followed on at open

in my view it is designed to make people think something is wrong getting them to sell

I would say this worked,

they know that a release is going to happen today or latest tomorrow, which will move the price well up, so last effort to pick up stock before that

so the question is who got sucked in this morning to sell