I know for a fact that the DMT/NaOH solution is unstable (Lilienthal said so).
Two things about this. First, "Lilenthal said so" is your evidence? I'm pretty sure he's right, but still don't believe something just b/c someone said so, find out with scientific facts and site that as your reason. ie - why the NaOH solution will cause it to be unstable.
Second, NaOH is basic. I thought we were talking about prolonged exposure to acidic conditions, right? So the NaOH concern isn't relevant. One would soak DMT alkaloid containing plant materials only in acidic conditions while trying to extract them. Why would it be left to sit in a NaOH solution? It would be extracted with a NP and the NaOH washed away with water and then either be left to dry and the NP evap., or another A/B would be performed.
And the sep. funnel idea was not a personal suggesion, but I'm glad to know that you have a real one. I was just giving someone who doesn't have real glassware a different OTC option to the freezing idea.
freezind and pouring is good if you just dont want to deal with the emulsion and dont mind waiting overnight.
MaDMAx is right, filtering it until its clean will eliminate the emulsion problem. It will also help to purify the goods some. This is true in just about any separation. Tiny little solids are the most common cause of emulsions from what swinl's seen. Doing this will save more time than waiting for fairly sizable amounts of water to freeze in the freezer IMHO.
Still though, it is a clever little idea, I like the novelty of it.