It cooled overnight, causing crystals to form in the same manner as during the freeze precipitation. The slow cooling has helped make them look rather nice! We'll have to ignore the aesthetics, though, because the simplest way to get them out is by gently warming the entire mixture with a water bath until they've completely redissolved.
As an additional perspective on this, more DMT will have been released overnight from the action of the lye breaking down the bark. This DMT diffuses upwards through the soup and meets the coolest part of the naphtha, where the saturated concentration is consequently lowest. The bark/naphtha interface also contains plenty of nucleation points for crystallisation to start, leading to the crystals forming in the depicted location.
All in all, this is a good sign that your naphtha has become saturated with DMT, and you can expect a healthy crop of crystals in the freezer. Taking it slowly - first cooling back to room temperature, then chilling in the fridge, before the final transfer to the freezer - will help in producing sparkly snowflakes again. If you can insulate your precipitation dish somehow so that cooling occurs more slowly, all the better.
