I found an article online that explains the LUNA/UST linkage, and what happens when it decouples from that linkage which is in place to provide price stability and equilibrium…. As Below….
UST is an algorithmic stablecoin and is operated via computer codes that help maintain its price equilibrium. The process involves burning or minting LUNA/UST to maintain the price of these tokens.
When a UST is minted, $1 of Luna is burned, while this also happens the other way around for Luna minting and UST burning. As UST threatens to go below its peg, holders will sell their UST (or burn it) for $1 of Luna, making a slight profit. This is until UST rises above $1, when the opposite encouragement happens.
After a large amount of UST was dumped, the stablecoin started to depeg. More UST was sold in a mass panic, minting more Luna and increasing its circulating supply. This had the knock-on effect of then crashing the price of Luna.
According to Wu Blockchain, some 46 million Luna was issued on May 10, with 1.2 billion UST burned. This number seems to have increased further on May 11 and May 12 as the prices drop further.
in a nutshell, once this cycle commenced and continued, the crypto currency literally ate itself, due to its design. There are steps in place to try and recover, but whether they can or not is a guess.