I'm no expert. but it doesn't look good maybe neurological. Some snakes like Ball Pythons are born wobbler's due to over breeding and this might be the same case here. They act fine even eat okay until the very day they die. Might be the same case here and maybe the farm didn't catch it. My friend breeds python's and he's fairly careful, but a occasional wobbler get's thru and it's heart-breaking. Can't tell you how many times he thought one would make it, but didn't. Almost anything involving the nervous system is a death sentence and though I'm no expert it does look like it's nerve or brain based twitching other than from shock usually is.
