Centipede's head and next 4 segments are paralyzed/immobile. I need help.

[Nicholas Rothstein]

Unlikely. Also, based on what everyone elae is saying its unlikely to be from an artificial chemical, as the odds of it being that in each of their cases is quite slim.

Your centipede is probably beyond recovery right now by the sounds of it, so I'd throw it in the freezer and put it out of its misery. Sorry to say.

I did unfortunately put it in the freezer. I hated to see it struggle and suffer.