There is no understanding. Those who have a sell order in will see hits above their asking price, buyers will see hits below what they are asking. Wild swings are normal. There is no rhyme or reason to what you see short term. There are no MM.
The only consistent trend for every suspended pink over the long term is lowering volume and lowering price. As the price drops, you will see spikes in volume as the "averaging down" crowd uses their "dry powder". But eventually that gets tapped out and the volume drops and the next set of buyers is waiting at the next level down.
How long the volume lasts, and how quickly they get to the trips is different for every suspended pink on the greys, but they all end up there sooner or later.