They HARDCODED the value of the stablecoin in their protocol! If you want to know how little they think about failsafes in Crypto here it is! See thread below on why the hell one de-peg sets of chain reactions
@cybeardjm "The situation with fUSD was also further exacerbated by the fact that the stablecoin’s deposit limit was set to infinity instead of zero."
@cybeardjm It would be really fascinating if the divide by zero = infinity error were codified in a smart contract and as such couldn't be changed/fixed.