Maybe. Could be one reason.
I have watched "pumpers" use this type of posting as a reason for a stock not moving. I've always thought, yah right, its not MM playing with the stock its flippers or shareholders trying to move on when we see no volume and a large ask show up.
Given the commission is higher than a $0.50 or $4.00 trade, and given the number of these that showed up this afternoon at the same time the stock slowed down....its just a "little" more than interesting.
FYI; its still happening as I type this.
Not claiming its real, just one of the "little" known facts. If news comes out after the close, I might keep a more watchful eye on the prints.