I have a male spider that sleeps with his head upside down at times lol, call the police I'm abusing itLonelyGhost:
that is so not normal... i hope you find someone to help that snake and i would report that person for animal cruelty.
Wobbling and or corkscrewing spiders tend to go upside down a lot, but if it can't right itself then it is probably a really bad wobbler and may have issues eating and or drinking.