Brooks Kingsnake strange digestion and behavior? (diarrhea and biting himself)

[Bogertophis]

I just found him strangling himself his neck was purple and red and his mouth was open with his tongue sticking out he was in like a knot he couldnt untangle i thought he was dead i dont know what to do im crying my eyes out i dont know whats going on and im not goig to bed to wake up to him dead i have him in his feeding cage and i might have to feed him i only have the ones in the freezer but its better than nothing his tail is all bit up too and some of its bleeding

he also had a little bit of weird mucus stuff on his body idk what but he smells also like vinegar or pennies or something he usually smells like nothing and hes trying to knot himself again

i dont know what made me go check on him but im glad i did please help idk if there is much to do anyways im just scared

Heck yes, just feed him. I don't think it has anything to do with your frozen feeders. So sorry...hang in there.

BTW, thaw rodents directly in cool water- that's the fastest way. Change the water after about 10 minutes (once it gets too cold) & as needed to hasten the process, & check thoroughly by hand that it's soft through-out before offering.