At this point doesn't matter if it hits 1 USD again, the way a "stablecoin" backed by volatile assets works is by the management team selling or buying more of the subjacent asset to keep their portfolio (when valued in the same fiat currency the stablecoin is pegged to) at pair with the coin circulating supply

It means the coin needs a high degree of trust put in the manager by the userbase, can be done, but ustc has already been left to sink once, there is no guarantee it will not be left to go down again in the next bear cycle