Include

[nuthn2do]

I'm with the dodgy feeder brigade. Sounds like it could be secondary poisoning from brodifacoum (Talon, Havoc).
OR check with your food supplier that the feeders had not been treated for parasites lately with ivermectin or selamectin. Both these can cause paralysis and death in reptiles (there's a withholding period)
Only one way you'll know for sure
Craig