It's possible the ask was a block of 5000. The order for 325 would have given someone a partial fill on their sell order while reducing the remaining number of shares offered to 4675 which wouldn't show on L2.
It could be because someone probably had 5k at the ask of .093, and when the 325 was bought, then 4675 is left and that is not enough for the MM to show anymore (4675 < 5000).