The snowflake crystallizations are completely normal. It's what happens when the DMT vapor that is traveling through the pipe to your mouth naturally cools and condenses on the sides of the glass before it can reach your lungs. It's still DMT, it's just condensed out of its vapor form prematurely. I suppose if you keep the glass somewhat warm, this could minimize that effect. But all is not lost! You can use isopropyl alcohol to rinse it through, and then collect the alcohol in a dish (or something) and let it evaporate. When it's done evaporating, you can scrape back up the goodies and smoke them. I've often found that it seems to be more potent by weight than normal DMT.
"Science without religion is lame. Religion without science is blind" - Albert Einstein
"The Mighty One appears, the horizon shines. Atum appears on the smell of his censing, the Sunshine- god has risen in the sky, the Mansion of the pyramidion is in joy and all its inmates are assembled, a voice calls out within the shrine, shouting reverberates around the Netherworld." - Egyptian Book of the Dead
"Man fears time, but time fears the Pyramids" - 9th century Arab proverb