It wouldn't make sense that it needs to be within 81 cents because who controls that? The company isn't selling shares to keep the price in check and no one cares about regulatory rules that the PP "must" abide by. If I had the money I could have painted it to .85 if I wanted to and then it would have closed outside of .81 and no one could have stopped it (nor would).

I believe it's more likely MM's just trying to squeeze pennies out of retail investors and make them doubt an obviously very strong NR. Either that or maybe it's people presently holding shorts that unloaded some to protect them and hope people sell tomorrow (which I believe people would have to be dumb to do)